从数据框列值的末尾删除字符

Question

I have dataframe with below values and I want to remove last characters ie - from all the row. How can I do it?

df:

Sn  URL
1   Sunil-
2   R-amesh-
3   Oxa--
4   --AB

I have below function, how to apply this? Is is it possible to use lambda? Please help?

def rchop(thestring, ending):
    if thestring.str.endswith(ending):
       return thestring[:-len(ending)]
    return thestring

df['URL'] = rchop(df['URL'], '-') -- not working

Output expected:

Sn  URL
1   Sunil
2   R-amesh
3   Oxa
4   --AB

Answer 1

we can use Series.str.rstrip

In [16]: df['URL'] = df['URL'].str.rstrip('-')

In [17]: df
Out[17]:
   Sn      URL
0   1    Sunil
1   2  R-amesh
2   3      Oxa
3   4     --AB