remove [] from a dataframe in python

Question

I have a dataframe with []

I want to remove [] from the Name column

I tried this:

df['Name'] = df['Name'].str.replace("['", "")
df['Name'] = df['Name'].str.replace("']", "")

But it seems not working

Asked By: Maurice

||

Source

Answer 1

You have an error in your code, namely the ' (single-quote) character. Tried the following:

import pandas as pd

df = pd.DataFrame.from_records(data=[
    {
        "Name": "[Name1]",
        "ID": 1
    },
    {
        "Name": "[Name2]",
        "ID": 2
    },
        {
        "Name": "[Name3]",
        "ID": 3
    }
])

print(df)
df['Name'] = df['Name'].str.replace("[", "")
df['Name'] = df['Name'].str.replace("]", "")
print(df)

which returned:

      Name  ID
0  [Name1]   1
1  [Name2]   2
2  [Name3]   3
/home/sawik/./playground.py:81: FutureWarning: The default value of regex will change from True to False in a future version. In addition, single character regular expressions will *not* be treated as literal strings when regex=True.
  df['Name'] = df['Name'].str.replace("[", "")
/home/sawik/./playground.py:82: FutureWarning: The default value of regex will change from True to False in a future version. In addition, single character regular expressions will *not* be treated as literal strings when regex=True.
  df['Name'] = df['Name'].str.replace("]", "")
    Name  ID
0  Name1   1
1  Name2   2
2  Name3   3

Answered By: Piotr Sawicki

Answer 2

This should help,you need to use char to solve problem

string = '[ads[123['
print(string.replace('[', '').replace(']', ''))

Answered By: daMpik

Answer 3

Your column consists of lists, not strings, so you can’t use string operations on it. What you can (and should) do is to .join the lists of strings into strings separated by comma.

>>> df = pd.DataFrame({'Test': [['foo', 'bar'], ['baz']]})
>>> df
         Test
0  [foo, bar]
1       [baz]
>>> df.dtypes
Test    object
dtype: object
>>> df['Test'] = df.Test.str.join(',')
>>> df
      Test
0  foo,bar
1      baz

Answered By: fsimonjetz

remove [] from a dataframe in python

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