Python remove … and spaces from a column

Question

I have a dataset with a column having values:

.. >= 7 years
1 <= ... < 4 years
4 <= ... < 7 years
4 <= ... < 7 years
1 <= ... < 4 years
1 <= ... < 4 years

I am trying to remove the spaces & also the "..."

I have used the following codes:

data.columns = data.columns.map(lambda x: x.lstrip('...'))

This removes the .. from the first line but not for the other lines. In order to remove the spaces I tried the following:

data.columns = data.columns.map(lambda x: x.strip()) 

But this doesn't seem to work. Can someone help.

Thanks in advance.

Answer 1

You can use replace to replace dots and spaces with empty string. In your case use:

data.columns = data.columns.map(lambda x: x.replace('.', '').replace(' ', '')) 

Answer 2

Pandas DataFrame.replace()接受正则表达式，因此您可以使用以下命令删除字符：

df = df.replace(r"\s*\.*", "", regex = True)