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TYP: remove inappropriate use of cast #34990

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Merged
merged 1 commit into from
Jun 25, 2020
Merged

TYP: remove inappropriate use of cast #34990

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3 changes: 1 addition & 2 deletions pandas/io/formats/format.py
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Original file line number Diff line number Diff line change
Expand Up @@ -588,15 +588,14 @@ def __init__(
elif isinstance(col_space, (int, str)):
self.col_space = {"": col_space}
self.col_space.update({column: col_space for column in self.frame.columns})
elif isinstance(col_space, dict):
elif isinstance(col_space, Mapping):
for column in col_space.keys():
if column not in self.frame.columns and column != "":
raise ValueError(
f"Col_space is defined for an unknown column: {column}"
)
self.col_space = col_space
else:
col_space = cast(Sequence, col_space)
if len(frame.columns) != len(col_space):
raise ValueError(
f"Col_space length({len(col_space)}) should match "
Expand Down