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Add float initializer to FtPrecise

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This commit is contained in:
Matthias 2022-08-10 11:29:04 +00:00
parent e7cb1b7375
commit ed004236ce
3 changed files with 12 additions and 4 deletions
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4
freqtrade/exchange/exchange.py
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@ -709,8 +709,8 @@ class Exchange:
# counting_mode=self.precisionMode, # counting_mode=self.precisionMode,
# )) # ))
if self.precisionMode == TICK_SIZE: if self.precisionMode == TICK_SIZE:
precision = FtPrecise(str(self.markets[pair]['precision']['price'])) precision = FtPrecise(self.markets[pair]['precision']['price'])
price_str = FtPrecise(str(price)) price_str = FtPrecise(price)
missing = price_str % precision missing = price_str % precision
if not missing == FtPrecise("0"): if not missing == FtPrecise("0"):
price = round(float(str(price_str - missing + precision)), 14) price = round(float(str(price_str - missing + precision)), 14)

7
freqtrade/util/ft_precise.py
View File

@ -1,9 +1,12 @@
""" """
Slim wrapper around ccxt's Precise (string math) Slim wrapper around ccxt's Precise (string math)
To have imports from freqtrade To have imports from freqtrade - and support float initializers
""" """
from ccxt import Precise from ccxt import Precise
class FtPrecise(Precise): class FtPrecise(Precise):
pass def __init__(self, number, decimals=None):
if not isinstance(number, str):
number = str(number)
super().__init__(number, decimals)

5
tests/exchange/test_ccxt_precise.py
View File

@ -73,3 +73,8 @@ def test_FtPrecise():
assert FtPrecise('3.1415') <= FtPrecise('3.1415') assert FtPrecise('3.1415') <= FtPrecise('3.1415')
assert FtPrecise('3.1415') <= FtPrecise('3.14150000000000000000001') assert FtPrecise('3.1415') <= FtPrecise('3.14150000000000000000001')
assert FtPrecise(213) == '213'
assert FtPrecise(-213) == '-213'
assert str(FtPrecise(-213)) == '-213'
assert FtPrecise(213.2) == '213.2'