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use fstring

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This commit is contained in:
Janne Sinivirta 2018-07-03 11:17:41 +03:00
parent fa8fc3e4ce
commit 79aab4cce2
1 changed files with 2 additions and 4 deletions
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6
freqtrade/optimize/hyperopt.py
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@ -71,10 +71,8 @@ class Hyperopt(Backtesting):
# Ensure the number of dimensions match
# the number of parameters in the list x.
if len(params) != len(dimensions):
msg = "Mismatch in number of search-space dimensions. " \
"len(dimensions)=={} and len(x)=={}"
msg = msg.format(len(dimensions), len(params))
raise ValueError(msg)
raise ValueError('Mismatch in number of search-space dimensions. '
f'len(dimensions)=={len(dimensions)} and len(x)=={len(params)}')
# Create a dict where the keys are the names of the dimensions
# and the values are taken from the list of parameters x.