如何在 csv 文件中將日期格式從 dd-mm-yyyy 更改為 dd/mm/yyyy

Question

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我有 CSV 和這種格式的日期，要更改嗎？ 我怎樣才能做到這一點？

Answer 1

import pandas as pd

# I have taken an example. You could do a pd.read_csv(filename) to read from file

#Input in dd-mm-yyyy format
df = pd.DataFrame({'DOB': {0: '26-01-2016', 1: '26-01-2016'}})

#Convert to pandas datetime object
df['DOB'] = pd.to_datetime(df.DOB)

#Convert to dd/mm/yyyy format('%d/%m/%Y')
df['DOB'] = df['DOB'].dt.strftime('%d/%m/%Y')

您可以在這里閱讀更多內容： https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.dt.strftime.html