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CLN: Add typing for dtype argument in io/sql.py #38680

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Merged
merged 7 commits into from
Dec 29, 2020
Merged

CLN: Add typing for dtype argument in io/sql.py #38680

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e1bc42a
Add typing for io/sql.py
avinashpancham Dec 24, 2020
1aaa6a2
Merge remote-tracking branch 'upstream/master' into typing_dtype
avinashpancham Dec 28, 2020
2c70647
Cast dtype to dict
avinashpancham Dec 28, 2020
a82a6c1
Replace isinstance checks with is_dict_like
avinashpancham Dec 29, 2020
41138e3
Merge remote-tracking branch 'upstream/master' into typing_dtype
avinashpancham Dec 29, 2020
8dc13bd
Revert check to original form
avinashpancham Dec 29, 2020
ae41d91
Remove superfluous if statement
avinashpancham Dec 29, 2020
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Cast dtype to dict
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@avinashpancham
avinashpancham committed Dec 28, 2020
commit 2c70647dd470fa7b68ef21ce6559c5aa16c4b4d2
11 changes: 7 additions & 4 deletions pandas/io/sql.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
from datetime import date, datetime, time
from functools import partial
import re
from typing import Any, Dict, Iterator, List, Optional, Sequence, Union, overload
from typing import Any, Dict, Iterator, List, Optional, Sequence, Union, cast, overload
import warnings

import numpy as np
Expand Down Expand Up @@ -1493,10 +1493,13 @@ def to_sql(

.. versionadded:: 0.24.0
"""
if dtype and not is_dict_like(dtype):
dtype = {col_name: dtype for col_name in frame}
if dtype is not None:
if not is_dict_like(dtype):
dtype = {col_name: dtype for col_name in frame}
else:
dtype = cast(dict, dtype)

if dtype is not None and isinstance(dtype, dict):
if dtype:
from sqlalchemy.types import TypeEngine, to_instance

for col, my_type in dtype.items():
Expand Down