Remove opening and closing parenthesis with word in pandas

Question

Given a data frame:

df = 

                         multi
0 MULTIPOLYGON(((3 11, 2 33)))
1 MULTIPOLYGON(((4 22, 5 66)))

I was trying to remov

Answer 1

Try this:

    import pandas as pd
import re 
def f(x):
    x = ' '.join(re.findall(r'[0-9, ]+',x))
    return x

def f2(x):
    x = re.findall(r'[0-9, ]+',x)

    return pd.Series(x[0].split(','))       


df =pd.DataFrame({'a':['MULTIPOLYGON(((3 11, 2 33)))' ,'MULTIPOLYGON(((4 22, 5 6)))']})
df['a'] = df['a'].apply(f)
print(df)
#or for different columns you can do
df =pd.DataFrame({'a':['MULTIPOLYGON(((3 11, 2 33)))' ,'MULTIPOLYGON(((4 22, 5 6)))']})
#df['multi'] = df.a.str.replace('[^0-9. ]', '', regex=True)
#print(df)
list_of_cols = ['c1','c2']
df[list_of_cols] = df['a'].apply(f2)
del df['a']
print(df)

output:

            a
0  3 11, 2 33
1   4 22, 5 6
     c1     c2
0  3 11   2 33
1  4 22    5 6
[Finished in 2.5s]