portfolio.py

   1 import time
   2 from datetime import datetime, timedelta
   3 from decimal import Decimal as D, ROUND_DOWN
   4 from json import JSONDecodeError
   5 from simplejson.errors import JSONDecodeError as SimpleJSONDecodeError
   6 from ccxt import ExchangeError, InsufficientFunds, ExchangeNotAvailable, InvalidOrder, OrderNotCached
   7 from retry import retry
   8 import requests
   9
  10 # FIXME: correctly handle web call timeouts
  11
  12 class Portfolio:
  13     URL = "https://cryptoportfolio.io/wp-content/uploads/portfolio/json/cryptoportfolio.json"
  14     liquidities = {}
  15     data = None
  16     last_date = None
  17
  18     @classmethod
  19     def wait_for_recent(cls, market, delta=4):
  20         cls.repartition(market, refetch=True)
  21         while cls.last_date is None or datetime.now() - cls.last_date > timedelta(delta):
  22             time.sleep(30)
  23             market.report.print_log("Attempt to fetch up-to-date cryptoportfolio")
  24             cls.repartition(market, refetch=True)
  25
  26     @classmethod
  27     def repartition(cls, market, liquidity="medium", refetch=False):
  28         cls.parse_cryptoportfolio(market, refetch=refetch)
  29         liquidities = cls.liquidities[liquidity]
  30         return liquidities[cls.last_date]
  31
  32     @classmethod
  33     def get_cryptoportfolio(cls, market):
  34         try:
  35             r = requests.get(cls.URL)
  36             market.report.log_http_request(r.request.method,
  37                     r.request.url, r.request.body, r.request.headers, r)
  38         except Exception as e:
  39             market.report.log_error("get_cryptoportfolio", exception=e)
  40             return
  41         try:
  42             cls.data = r.json(parse_int=D, parse_float=D)
  43         except (JSONDecodeError, SimpleJSONDecodeError):
  44             cls.data = None
  45
  46     @classmethod
  47     def parse_cryptoportfolio(cls, market, refetch=False):
  48         if refetch or cls.data is None:
  49             cls.get_cryptoportfolio(market)
  50
  51         def filter_weights(weight_hash):
  52             if weight_hash[1][0] == 0:
  53                 return False
  54             if weight_hash[0] == "_row":
  55                 return False
  56             return True
  57
  58         def clean_weights(i):
  59             def clean_weights_(h):
  60                 if h[0].endswith("s"):
  61                     return [h[0][0:-1], (h[1][i], "short")]
  62                 else:
  63                     return [h[0], (h[1][i], "long")]
  64             return clean_weights_
  65
  66         def parse_weights(portfolio_hash):
  67             weights_hash = portfolio_hash["weights"]
  68             weights = {}
  69             for i in range(len(weights_hash["_row"])):
  70                 date = datetime.strptime(weights_hash["_row"][i], "%Y-%m-%d")
  71                 weights[date] = dict(filter(
  72                         filter_weights,
  73                         map(clean_weights(i), weights_hash.items())))
  74             return weights
  75
  76         high_liquidity = parse_weights(cls.data["portfolio_1"])
  77         medium_liquidity = parse_weights(cls.data["portfolio_2"])
  78
  79         cls.liquidities = {
  80                 "medium": medium_liquidity,
  81                 "high":   high_liquidity,
  82                 }
  83         cls.last_date = max(max(medium_liquidity.keys()), max(high_liquidity.keys()))
  84
  85 class Computation:
  86     computations = {
  87             "default": lambda x, y: x[y],
  88             "average": lambda x, y: x["average"],
  89             "bid": lambda x, y: x["bid"],
  90             "ask": lambda x, y: x["ask"],
  91             }
  92
  93     @classmethod
  94     def compute_value(cls, ticker, action, compute_value="default"):
  95         if action == "buy":
  96             action = "ask"
  97         if action == "sell":
  98             action = "bid"
  99         if isinstance(compute_value, str):
 100             compute_value = cls.computations[compute_value]
 101         return compute_value(ticker, action)
 102
 103 class Amount:
 104     def __init__(self, currency, value, linked_to=None, ticker=None, rate=None):
 105         self.currency = currency
 106         self.value = D(value)
 107         self.linked_to = linked_to
 108         self.ticker = ticker
 109         self.rate = rate
 110
 111     def in_currency(self, other_currency, market, rate=None, action=None, compute_value="average"):
 112         if other_currency == self.currency:
 113             return self
 114         if rate is not None:
 115             return Amount(
 116                     other_currency,
 117                     self.value * rate,
 118                     linked_to=self,
 119                     rate=rate)
 120         asset_ticker = market.get_ticker(self.currency, other_currency)
 121         if asset_ticker is not None:
 122             rate = Computation.compute_value(asset_ticker, action, compute_value=compute_value)
 123             return Amount(
 124                     other_currency,
 125                     self.value * rate,
 126                     linked_to=self,
 127                     ticker=asset_ticker,
 128                     rate=rate)
 129         else:
 130             raise Exception("This asset is not available in the chosen market")
 131
 132     def as_json(self):
 133         return {
 134                 "currency": self.currency,
 135                 "value": round(self).value.normalize(),
 136                 }
 137
 138     def __round__(self, n=8):
 139         return Amount(self.currency, self.value.quantize(D(1)/D(10**n), rounding=ROUND_DOWN))
 140
 141     def __abs__(self):
 142         return Amount(self.currency, abs(self.value))
 143
 144     def __add__(self, other):
 145         if other == 0:
 146             return self
 147         if other.currency != self.currency and other.value * self.value != 0:
 148             raise Exception("Summing amounts must be done with same currencies")
 149         return Amount(self.currency, self.value + other.value)
 150
 151     def __radd__(self, other):
 152         if other == 0:
 153             return self
 154         else:
 155             return self.__add__(other)
 156
 157     def __sub__(self, other):
 158         if other == 0:
 159             return self
 160         if other.currency != self.currency and other.value * self.value != 0:
 161             raise Exception("Summing amounts must be done with same currencies")
 162         return Amount(self.currency, self.value - other.value)
 163
 164     def __rsub__(self, other):
 165         if other == 0:
 166             return -self
 167         else:
 168             return -self.__sub__(other)
 169
 170     def __mul__(self, value):
 171         if not isinstance(value, (int, float, D)):
 172             raise TypeError("Amount may only be multiplied by numbers")
 173         return Amount(self.currency, self.value * value)
 174
 175     def __rmul__(self, value):
 176         return self.__mul__(value)
 177
 178     def __floordiv__(self, value):
 179         if not isinstance(value, (int, float, D)):
 180             raise TypeError("Amount may only be divided by numbers")
 181         return Amount(self.currency, self.value / value)
 182
 183     def __truediv__(self, value):
 184         return self.__floordiv__(value)
 185
 186     def __lt__(self, other):
 187         if other == 0:
 188             return self.value < 0
 189         if self.currency != other.currency:
 190             raise Exception("Comparing amounts must be done with same currencies")
 191         return self.value < other.value
 192
 193     def __le__(self, other):
 194         return self == other or self < other
 195
 196     def __gt__(self, other):
 197         return not self <= other
 198
 199     def __ge__(self, other):
 200         return not self < other
 201
 202     def __eq__(self, other):
 203         if other == 0:
 204             return self.value == 0
 205         if self.currency != other.currency:
 206             raise Exception("Comparing amounts must be done with same currencies")
 207         return self.value == other.value
 208
 209     def __ne__(self, other):
 210         return not self == other
 211
 212     def __neg__(self):
 213         return Amount(self.currency, - self.value)
 214
 215     def __str__(self):
 216         if self.linked_to is None:
 217             return "{:.8f} {}".format(self.value, self.currency)
 218         else:
 219             return "{:.8f} {} [{}]".format(self.value, self.currency, self.linked_to)
 220
 221     def __repr__(self):
 222         if self.linked_to is None:
 223             return "Amount({:.8f} {})".format(self.value, self.currency)
 224         else:
 225             return "Amount({:.8f} {} -> {})".format(self.value, self.currency, repr(self.linked_to))
 226
 227 class Balance:
 228     base_keys = ["total", "exchange_total", "exchange_used",
 229             "exchange_free", "margin_total", "margin_in_position",
 230             "margin_available", "margin_borrowed", "margin_pending_gain"]
 231
 232     def __init__(self, currency, hash_):
 233         self.currency = currency
 234         for key in self.base_keys:
 235             setattr(self, key, Amount(currency, hash_.get(key, 0)))
 236
 237         self.margin_position_type = hash_.get("margin_position_type")
 238
 239         if hash_.get("margin_borrowed_base_currency") is not None:
 240             base_currency = hash_["margin_borrowed_base_currency"]
 241             for key in [
 242                     "margin_liquidation_price",
 243                     "margin_lending_fees",
 244                     "margin_pending_base_gain",
 245                     "margin_borrowed_base_price"
 246                     ]:
 247                 setattr(self, key, Amount(base_currency, hash_.get(key, 0)))
 248
 249     def as_json(self):
 250         return dict(map(lambda x: (x, getattr(self, x).as_json()["value"]), self.base_keys))
 251
 252     def __repr__(self):
 253         if self.exchange_total > 0:
 254             if self.exchange_free > 0 and self.exchange_used > 0:
 255                 exchange = " Exch: [✔{} + ❌{} = {}]".format(str(self.exchange_free), str(self.exchange_used), str(self.exchange_total))
 256             elif self.exchange_free > 0:
 257                 exchange = " Exch: [✔{}]".format(str(self.exchange_free))
 258             else:
 259                 exchange = " Exch: [❌{}]".format(str(self.exchange_used))
 260         else:
 261             exchange = ""
 262
 263         if self.margin_total > 0:
 264             if self.margin_available != 0 and self.margin_in_position != 0:
 265                 margin = " Margin: [✔{} + ❌{} = {}]".format(str(self.margin_available), str(self.margin_in_position), str(self.margin_total))
 266             elif self.margin_available != 0:
 267                 margin = " Margin: [✔{}]".format(str(self.margin_available))
 268             else:
 269                 margin = " Margin: [❌{}]".format(str(self.margin_in_position))
 270         elif self.margin_total < 0:
 271             margin = " Margin: [{} @@ {}/{}]".format(str(self.margin_total),
 272                     str(self.margin_borrowed_base_price),
 273                     str(self.margin_lending_fees))
 274         else:
 275             margin = ""
 276
 277         if self.margin_total != 0 and self.exchange_total != 0:
 278             total = " Total: [{}]".format(str(self.total))
 279         else:
 280             total = ""
 281
 282         return "Balance({}".format(self.currency) + "".join([exchange, margin, total]) + ")"
 283
 284 class Trade:
 285     def __init__(self, value_from, value_to, currency, market):
 286         # We have value_from of currency, and want to finish with value_to of
 287         # that currency. value_* may not be in currency's terms
 288         self.currency = currency
 289         self.value_from = value_from
 290         self.value_to = value_to
 291         self.orders = []
 292         self.market = market
 293         assert self.value_from.value * self.value_to.value >= 0
 294         assert self.value_from.currency == self.value_to.currency
 295         if self.value_from != 0:
 296             assert self.value_from.linked_to is not None and self.value_from.linked_to.currency == self.currency
 297         elif self.value_from.linked_to is None:
 298             self.value_from.linked_to = Amount(self.currency, 0)
 299         self.base_currency = self.value_from.currency
 300
 301     @property
 302     def delta(self):
 303         return self.value_to - self.value_from
 304
 305     @property
 306     def action(self):
 307         if self.value_from == self.value_to:
 308             return None
 309         if self.base_currency == self.currency:
 310             return None
 311
 312         if abs(self.value_from) < abs(self.value_to):
 313             return "acquire"
 314         else:
 315             return "dispose"
 316
 317     def order_action(self, inverted):
 318         if (self.value_from < self.value_to) != inverted:
 319             return "buy"
 320         else:
 321             return "sell"
 322
 323     @property
 324     def trade_type(self):
 325         if self.value_from + self.value_to < 0:
 326             return "short"
 327         else:
 328             return "long"
 329
 330     @property
 331     def is_fullfiled(self):
 332         return abs(self.filled_amount(in_base_currency=True)) >= abs(self.delta)
 333
 334     def filled_amount(self, in_base_currency=False):
 335         filled_amount = 0
 336         for order in self.orders:
 337             filled_amount += order.filled_amount(in_base_currency=in_base_currency)
 338         return filled_amount
 339
 340     def update_order(self, order, tick):
 341         actions = {
 342                 0: ["waiting", None],
 343                 1: ["waiting", None],
 344                 2: ["adjusting", lambda x, y: (x[y] + x["average"]) / 2],
 345                 3: ["waiting", None],
 346                 4: ["waiting", None],
 347                 5: ["adjusting", lambda x, y: (x[y]*2 + x["average"]) / 3],
 348                 6: ["waiting", None],
 349                 7: ["market_fallback", "default"],
 350                 }
 351
 352         if tick in actions:
 353             update, compute_value = actions[tick]
 354         elif tick % 3 == 1:
 355             update = "market_adjust"
 356             compute_value = "default"
 357         else:
 358             update = "waiting"
 359             compute_value = None
 360
 361         if compute_value is not None:
 362             order.cancel()
 363             new_order = self.prepare_order(compute_value=compute_value)
 364         else:
 365             new_order = None
 366
 367         self.market.report.log_order(order, tick, update=update,
 368                 compute_value=compute_value, new_order=new_order)
 369
 370         if new_order is not None:
 371             new_order.run()
 372             self.market.report.log_order(order, tick, new_order=new_order)
 373
 374     def prepare_order(self, close_if_possible=None, compute_value="default"):
 375         if self.action is None:
 376             return None
 377         ticker = self.market.get_ticker(self.currency, self.base_currency)
 378         inverted = ticker["inverted"]
 379         if inverted:
 380             ticker = ticker["original"]
 381         rate = Computation.compute_value(ticker, self.order_action(inverted), compute_value=compute_value)
 382
 383         # FIXME: Dust amount should be removed from there if they werent
 384         # honored in other sales
 385         delta_in_base = abs(self.delta)
 386         # 9 BTC's worth of move (10 - 1 or 1 - 10 depending on case)
 387
 388         if not inverted:
 389             base_currency = self.base_currency
 390             # BTC
 391             if self.action == "dispose":
 392                 filled = self.filled_amount(in_base_currency=False)
 393                 delta = delta_in_base.in_currency(self.currency, self.market, rate=1/self.value_from.rate)
 394                 # I have 10 BTC worth of FOO, and I want to sell 9 BTC
 395                 # worth of it, computed first with rate 10 FOO = 1 BTC.
 396                 # -> I "sell" "90" FOO at proposed rate "rate".
 397
 398                 delta = delta - filled
 399                 # I already sold 60 FOO, 30 left
 400             else:
 401                 filled = self.filled_amount(in_base_currency=True)
 402                 delta = (delta_in_base - filled).in_currency(self.currency, self.market, rate=1/rate)
 403                 # I want to buy 9 BTC worth of FOO, computed with rate
 404                 # 10 FOO = 1 BTC
 405                 # -> I "buy" "9 / rate" FOO at proposed rate "rate"
 406
 407                 # I already bought 3 / rate FOO, 6 / rate left
 408         else:
 409             base_currency = self.currency
 410             # FOO
 411             if self.action == "dispose":
 412                 filled = self.filled_amount(in_base_currency=True)
 413                 # Base is FOO
 414
 415                 delta = (delta_in_base.in_currency(self.currency, self.market, rate=1/self.value_from.rate)
 416                         - filled).in_currency(self.base_currency, self.market, rate=1/rate)
 417                 # I have 10 BTC worth of FOO, and I want to sell 9 BTC worth of it
 418                 # computed at rate 1 Foo = 0.01 BTC
 419                 # Computation says I should sell it at 125 FOO / BTC
 420                 # -> delta_in_base = 9 BTC
 421                 # -> delta = (9 * 1/0.01 FOO) * 1/125 = 7.2 BTC
 422                 # Action: "buy" "7.2 BTC" at rate "125" "FOO" on market
 423
 424                 # I already bought 300/125 BTC, only 600/125 left
 425             else:
 426                 filled = self.filled_amount(in_base_currency=False)
 427                 # Base is FOO
 428
 429                 delta = delta_in_base
 430                 # I have 1 BTC worth of FOO, and I want to buy 9 BTC worth of it
 431                 # At rate 100 Foo / BTC
 432                 # Computation says I should buy it at 125 FOO / BTC
 433                 # -> delta_in_base = 9 BTC
 434                 # Action: "sell" "9 BTC" at rate "125" "FOO" on market
 435
 436                 delta = delta - filled
 437                 # I already sold 4 BTC, only 5 left
 438
 439         if close_if_possible is None:
 440             close_if_possible = (self.value_to == 0)
 441
 442         if delta <= 0:
 443             self.market.report.log_error("prepare_order", message="Less to do than already filled: {}".format(delta))
 444             return None
 445
 446         order = Order(self.order_action(inverted),
 447             delta, rate, base_currency, self.trade_type,
 448             self.market, self, close_if_possible=close_if_possible)
 449         self.orders.append(order)
 450         return order
 451
 452     def as_json(self):
 453         return {
 454                 "action": self.action,
 455                 "from": self.value_from.as_json()["value"],
 456                 "to": self.value_to.as_json()["value"],
 457                 "currency": self.currency,
 458                 "base_currency": self.base_currency,
 459                 }
 460
 461     def __repr__(self):
 462         return "Trade({} -> {} in {}, {})".format(
 463                 self.value_from,
 464                 self.value_to,
 465                 self.currency,
 466                 self.action)
 467
 468     def print_with_order(self, ind=""):
 469         self.market.report.print_log("{}{}".format(ind, self))
 470         for order in self.orders:
 471             self.market.report.print_log("{}\t{}".format(ind, order))
 472             for mouvement in order.mouvements:
 473                 self.market.report.print_log("{}\t\t{}".format(ind, mouvement))
 474
 475 class Order:
 476     def __init__(self, action, amount, rate, base_currency, trade_type, market,
 477             trade, close_if_possible=False):
 478         self.action = action
 479         self.amount = amount
 480         self.rate = rate
 481         self.base_currency = base_currency
 482         self.market = market
 483         self.trade_type = trade_type
 484         self.results = []
 485         self.mouvements = []
 486         self.status = "pending"
 487         self.trade = trade
 488         self.close_if_possible = close_if_possible
 489         self.id = None
 490         self.tries = 0
 491
 492     def as_json(self):
 493         return {
 494                 "action": self.action,
 495                 "trade_type": self.trade_type,
 496                 "amount": self.amount.as_json()["value"],
 497                 "currency": self.amount.as_json()["currency"],
 498                 "base_currency": self.base_currency,
 499                 "rate": self.rate,
 500                 "status": self.status,
 501                 "close_if_possible": self.close_if_possible,
 502                 "id": self.id,
 503                 "mouvements": list(map(lambda x: x.as_json(), self.mouvements))
 504                 }
 505
 506     def __repr__(self):
 507         return "Order({} {} {} at {} {} [{}]{})".format(
 508                 self.action,
 509                 self.trade_type,
 510                 self.amount,
 511                 self.rate,
 512                 self.base_currency,
 513                 self.status,
 514                 " ✂" if self.close_if_possible else "",
 515                 )
 516
 517     @property
 518     def account(self):
 519         if self.trade_type == "long":
 520             return "exchange"
 521         else:
 522             return "margin"
 523
 524     @property
 525     def open(self):
 526         return self.status == "open"
 527
 528     @property
 529     def pending(self):
 530         return self.status == "pending"
 531
 532     @property
 533     def finished(self):
 534         return self.status == "closed" or self.status == "canceled" or self.status == "error"
 535
 536     @retry(InsufficientFunds)
 537     def run(self):
 538         self.tries += 1
 539         symbol = "{}/{}".format(self.amount.currency, self.base_currency)
 540         amount = round(self.amount, self.market.ccxt.order_precision(symbol)).value
 541
 542         if self.market.debug:
 543             self.market.report.log_debug_action("market.ccxt.create_order('{}', 'limit', '{}', {}, price={}, account={})".format(
 544                 symbol, self.action, amount, self.rate, self.account))
 545             self.results.append({"debug": True, "id": -1})
 546         else:
 547             action = "market.ccxt.create_order('{}', 'limit', '{}', {}, price={}, account={})".format(symbol, self.action, amount, self.rate, self.account)
 548             try:
 549                 self.results.append(self.market.ccxt.create_order(symbol, 'limit', self.action, amount, price=self.rate, account=self.account))
 550             except InvalidOrder:
 551                 # Impossible to honor the order (dust amount)
 552                 self.status = "closed"
 553                 self.mark_finished_order()
 554                 return
 555             except InsufficientFunds as e:
 556                 if self.tries < 5:
 557                     self.market.report.log_error(action, message="Retrying with reduced amount", exception=e)
 558                     self.amount = self.amount * D("0.99")
 559                     raise e
 560                 else:
 561                     self.market.report.log_error(action, message="Giving up {}".format(self), exception=e)
 562                     self.status = "error"
 563                     return
 564             except Exception as e:
 565                 self.status = "error"
 566                 self.market.report.log_error(action, exception=e)
 567                 return
 568         self.id = self.results[0]["id"]
 569         self.status = "open"
 570
 571     def get_status(self):
 572         if self.market.debug:
 573             self.market.report.log_debug_action("Getting {} status".format(self))
 574             return self.status
 575         # other states are "closed" and "canceled"
 576         if not self.finished:
 577             self.fetch()
 578             if self.finished:
 579                 self.mark_finished_order()
 580         return self.status
 581
 582     def mark_finished_order(self):
 583         if self.market.debug:
 584             self.market.report.log_debug_action("Mark {} as finished".format(self))
 585             return
 586         if self.status == "closed":
 587             if self.trade_type == "short" and self.action == "buy" and self.close_if_possible:
 588                 self.market.ccxt.close_margin_position(self.amount.currency, self.base_currency)
 589
 590     def fetch(self):
 591         if self.market.debug:
 592             self.market.report.log_debug_action("Fetching {}".format(self))
 593             return
 594         try:
 595             result = self.market.ccxt.fetch_order(self.id, symbol=self.amount.currency)
 596             self.results.append(result)
 597             self.status = result["status"]
 598             # Time at which the order started
 599             self.timestamp = result["datetime"]
 600         except OrderNotCached:
 601             self.status = "closed_unknown"
 602
 603         self.fetch_mouvements()
 604
 605         # FIXME: consider open order with dust remaining as closed
 606
 607     def dust_amount_remaining(self):
 608         return self.remaining_amount() < Amount(self.amount.currency, D("0.001"))
 609
 610     def remaining_amount(self):
 611         return self.amount - self.filled_amount()
 612
 613     def filled_amount(self, in_base_currency=False):
 614         if self.status == "open":
 615             self.fetch()
 616         filled_amount = 0
 617         for mouvement in self.mouvements:
 618             if in_base_currency:
 619                 filled_amount += mouvement.total_in_base
 620             else:
 621                 filled_amount += mouvement.total
 622         return filled_amount
 623
 624     def fetch_mouvements(self):
 625         try:
 626             mouvements = self.market.ccxt.privatePostReturnOrderTrades({"orderNumber": self.id})
 627         except ExchangeError:
 628             mouvements = []
 629         self.mouvements = []
 630
 631         for mouvement_hash in mouvements:
 632             self.mouvements.append(Mouvement(self.amount.currency,
 633                 self.base_currency, mouvement_hash))
 634
 635     def cancel(self):
 636         if self.market.debug:
 637             self.market.report.log_debug_action("Mark {} as cancelled".format(self))
 638             self.status = "canceled"
 639             return
 640         self.market.ccxt.cancel_order(self.id)
 641         self.fetch()
 642
 643 class Mouvement:
 644     def __init__(self, currency, base_currency, hash_):
 645         self.currency = currency
 646         self.base_currency = base_currency
 647         self.id = hash_.get("tradeID")
 648         self.action = hash_.get("type")
 649         self.fee_rate = D(hash_.get("fee", -1))
 650         try:
 651             self.date = datetime.strptime(hash_.get("date", ""), '%Y-%m-%d %H:%M:%S')
 652         except ValueError:
 653             self.date = None
 654         self.rate = D(hash_.get("rate", 0))
 655         self.total = Amount(currency, hash_.get("amount", 0))
 656         # rate * total = total_in_base
 657         self.total_in_base = Amount(base_currency, hash_.get("total", 0))
 658
 659     def as_json(self):
 660         return {
 661                 "fee_rate": self.fee_rate,
 662                 "date": self.date,
 663                 "action": self.action,
 664                 "total": self.total.value,
 665                 "currency": self.currency,
 666                 "total_in_base": self.total_in_base.value,
 667                 "base_currency": self.base_currency
 668                 }
 669
 670     def __repr__(self):
 671         if self.fee_rate > 0:
 672             fee_rate = " fee: {}%".format(self.fee_rate * 100)
 673         else:
 674             fee_rate = ""
 675         if self.date is None:
 676             date = "No date"
 677         else:
 678             date = self.date
 679         return "Mouvement({} ; {} {} ({}){})".format(
 680                 date, self.action, self.total, self.total_in_base,
 681                 fee_rate)
 682