Pandas: Get the length of the string present of a given column in a DataFrame

Last update on May 28 2022 13:02:41 (UTC/GMT +8 hours)

Pandas: String and Regular Expression Exercise-15 with Solution

Write a Pandas program to get the length of the string present of a given column in a DataFrame.

Sample Solution:

Python Code :

import pandas as pd
df = pd.DataFrame({
    'company_code': ['Abcd','EFGF', 'skfsalf', 'sdfslew', 'safsdf'],
    'date_of_sale ': ['12/05/2002','16/02/1999','25/09/1998','12/02/2022','15/09/1997'],
    'sale_amount': [12348.5, 233331.2, 22.5, 2566552.0, 23.0]})
print("Original DataFrame:")
print(df)
print("\nLength of the string in a column:")
df['company_code_length'] = df['company_code'].apply(len)
print(df)

Sample Output:

Original DataFrame:
  company_code date_of_sale   sale_amount
0         Abcd    12/05/2002      12348.5
1         EFGF    16/02/1999     233331.2
2      skfsalf    25/09/1998         22.5
3      sdfslew    12/02/2022    2566552.0
4       safsdf    15/09/1997         23.0

Length of the string in a column:
  company_code         ...         company_code_length
0         Abcd         ...                           4
1         EFGF         ...                           4
2      skfsalf         ...                           7
3      sdfslew         ...                           7
4       safsdf         ...                           6

[5 rows x 4 columns]

Python Code Editor:

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Next: Write a Pandas program to get the length of the integer of a given column in a DataFrame.

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Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
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To get the current working directory use

import os
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Documentation references for the modules, constants and functions used above:

The os and os.path modules.
The __file__ constant
os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
os.path.dirname(path) (returns "the directory name of pathname path")
os.getcwd() (returns "a string representing the current working directory")
os.chdir(path) ("change the current working directory to path")

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