如何在csv文件中将日期格式从dd-mm-yyyy更改为dd / mm / yyyy

Question

所以我有CSV格式的日期要更改吗？我怎样才能做到这一点 ？任何帮助！预先感谢！

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')

您可以在此处了解更多信息：https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.dt.strftime.html