Pandas: Add leading zeros to the integer column in a pandas series and makes the length of the field to 8 digit

Last update on April 03 2025 12:56:26 (UTC/GMT +8 hours)

3. Add Leading Zeros to Integers

Write a Pandas program to add leading zeros to the integer column in a pandas series and makes the length of the field to 8 digit.

Sample Solution:

Python Code :

import pandas as pd
nums = {'amount': [10, 250, 3000, 40000, 500000]}
print("Original dataframe:")
df = pd.DataFrame(nums)
print(df)
print("\nAdd leading zeros:")
df['amount'] = df['amount'].apply(lambda x: '{0:0>8}'.format(x))
print(df)

Sample Output:

Original dataframe:
   amount
0      10
1     250
2    3000
3   40000
4  500000

Add leading zeros:
     amount
0  00000010
1  00000250
2  00003000
3  00040000
4  00500000

For more Practice: Solve these Related Problems:

• Write a Pandas program to format an integer series by adding leading zeros so that each value becomes 8 digits long.
• Write a Pandas program to convert an integer series into strings padded with zeros on the left to achieve a fixed length of 8.
• Write a Pandas program to update an integer column by formatting each number with leading zeros and then verify the string length.
• Write a Pandas program to transform a numeric series into a string series with 8-digit formatting including leading zeros.

Python Code Editor:

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