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粉碎:当一栏中含有具体扼杀物时,替换数值。
原标题:Python: replace values when column name contains specific strings

首先,我想找到一个包含年/月/日的名称,然后取而代之。 我能够这样做,但当我把它重新命名为包含年/月/日的栏目时,就会出现错误。

Wrong Code:
df[df.columns[df.columns.str.contains( year/month/day )]].squeeze()=df[df.columns[df.columns.str.contains( year/month/day )]].squeeze().str.replace( year , - ).str.replace( month , - ).str.replace( day ,  )
print(df)

Output:
SyntaxError: cannot assign to function call here. Maybe you meant  ==  instead of  = ?

Code without problems by using real column names:
df[ birthday_year/month/day ]=df[df.columns[df.columns.str.contains( year/month/day )]].squeeze().str.replace( year , - ).str.replace( month , - ).str.replace( day ,  )

我只想将其重新命名为包含年/月/日,而不是出生日——年/月/日。 任何建议?

df:

  birthday_year/month/day   name
  2023year5month2day        Jack
  2019year6month29day       Lauren
问题回答

我的本能是界定你希望操作的栏目,然后通过这些栏目加以篡改。 然后,我将把扼杀操纵写成“lam”功能,并利用数据框架的地图方法,设计新的系列,作为你数据框架的一栏。

类似情况

desired_columns = [str(x) for x in df.columns if  year/month/day  in str(x)]
for colname in desired_columns:
    df[colname] = df[colname].map(lambda a: a.replace( year ,  - ).replace( month ,  - ).replace( day ,  - ))




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