How to count non-alphanumeric characters on pandas dataframe

Question

Here's my data

No  Body
1   DaTa, Analytics 2
2   StackOver. 67%

Here's my expected output

No  Body                 Non Alphanumeric   
1   DaTa, Analytics 2    1       
2   StackOver. 67%       2  

I am only count non-alphanumeric like ! @ # & ( ) % – [ { } ] : ; ', ? / * space and number is not count

Answer 1

You can use:

df['Non Alphanumeric'] = df['Body'].str.findall(r'[^a-zA-Z0-9 ]').str.len()

Or:

df['Non Alphanumeric'] = df['Body'].str.count(r'[^a-zA-Z0-9 ]')

print (df)
   No               Body  Non Alphanumeric
0   1  DaTa, Analytics 2                 1
1   2     StackOver. 67%                 2