使用 for 循环从 pandas dataframe 列中删除字符

Question

I have a DF that has a country column and some of that countries has "(" in it. I tried to remove all of that "(" s with this for loop:

for country in df_energy['Country']:
    if ')' in df_energy['Country']:
        df_energy['Country'] = df_energy['Country'].replace({'(':'', ')':''})

But when I print that DF again, I see all parenthesis did not removed. I'd be happy if someone say where I made a mistake.

Thanks.

Answer 1

You don't need the loop:

df_energy['Country'] = df_energy['Country'].str.replace('[()]', '')

If you want to only replace matching () then:

df_energy['Country'] = df_energy['Country'].str.replace('\((.*)\)', r'\1')