How to replace all string in all columns using pandas?

Question

In pandas, how do I replace & with ‘&’ from all columns where &amp could be in any position in a string?

For example, in column Title if there is a value ‘Good & bad’, how do I replace it with ‘Good & bad’?

Asked By: bayman

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Source

Answer 1

Try this

df['Title'] = titanic_df['Title'].replace("&", "&")

Answered By: Songtham T.

Answer 2

Use replace with regex=True for substrings replacement:

df = pd.DataFrame({'A': ['Good &amp; bad', 'BB', 'CC', 'DD', 'Good &amp; bad'],
                   'B': range(5),
                   'C': ['Good &amp; bad'] * 5})

print (df)
                A  B               C
0  Good &amp; bad  0  Good &amp; bad
1              BB  1  Good &amp; bad
2              CC  2  Good &amp; bad
3              DD  3  Good &amp; bad
4  Good &amp; bad  4  Good &amp; bad

df = df.replace('&amp;','&', regex=True)
print (df)
            A  B           C
0  Good & bad  0  Good & bad
1          BB  1  Good & bad
2          CC  2  Good & bad
3          DD  3  Good & bad
4  Good & bad  4  Good & bad

If want replace only one column:

df['A'] = df['A'].replace('&amp;','&', regex=True)
print (df)
            A  B               C
0  Good & bad  0  Good &amp; bad
1          BB  1  Good &amp; bad
2          CC  2  Good &amp; bad
3          DD  3  Good &amp; bad
4  Good & bad  4  Good &amp; bad

Answered By: jezrael

Answer 3

Try this also worked for me

df['A'] = [i.replace('&amp;','&') for i in list(df['A'])]

Answered By: Lokeshwar G

How to replace all string in all columns using pandas?

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