熊猫包含带有替换的公式

Question

I cant get if statement to work on 2 columns

Progress so far:

col1= example.com/abc/abs

Goal: to get output of the whats after last "/"

This worked:

df['col2'] = df['col1'].str.rsplit('/', 1, expand=True)[1]

I need help with this part:

If col2 contains "/" , then I want to replace col1 with it, otherwise leave col1 as is.

I tried but did not work:

df1['col1'] = np.where(df1['col2'] =="/" , df1['col2'], df1['col1'])

Answer 1

Edit:

df['col1'] = numpy.where(df['col2'].notna(), df['col2'], df['col1'])