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Pandas: Capitalize all the string values of specified columns of a given DataFrame

Pandas: String and Regular Expression Exercise-5 with Solution

Write a Pandas program to capitalize all the string values of specified columns of a given DataFrame.

Sample Solution:

Python Code :

import pandas as pd
df = pd.DataFrame({
    'name': ['alberto','gino','ryan', 'Eesha', 'syed'],
    'date_of_birth ': ['17/05/2002','16/02/1999','25/09/1998','11/05/2002','15/09/1997'],
    'age': [18.5, 21.2, 22.5, 22, 23]
})
print("Original DataFrame:")
print(df)
print("\nAfter capitalizing name column:")
df['name'] = list(map(lambda x: x.capitalize(), df['name']))
print(df)

Sample Output:

Original DataFrame:
      name date_of_birth    age
0  alberto     17/05/2002  18.5
1     gino     16/02/1999  21.2
2     ryan     25/09/1998  22.5
3    Eesha     11/05/2002  22.0
4     syed     15/09/1997  23.0

After capitalizing name column:
      name date_of_birth    age
0  Alberto     17/05/2002  18.5
1     Gino     16/02/1999  21.2
2     Ryan     25/09/1998  22.5
3    Eesha     11/05/2002  22.0
4     Syed     15/09/1997  23.0

Python Code Editor:


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Previous: Write a Pandas program to add leading zeros to the character column in a pandas series and makes the length of the field to 8 digit.
Next: Write a Pandas program to count of occurrence of a specified substring in a DataFrame column.

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Python: Tips of the Day

Python: Time library

Time library provides lots of time related functions and methods and is good to know whether you're developing a website or apps and games or working with data science or trading financial markets. Time is essential in most development pursuits and Python's standard time library comes very handy for that.

Let's check out a few simple examples:

moment=time.strftime("%Y-%b-%d__%H_%M_%S",time.localtime())

import time
time_now=time.strftime("%H:%M:%S",time.localtime())
print(time_now)
date_now=time.strftime("%Y-%b-%d",time.localtime())
print(date_now)

Output:

11:36:34
2020-Nov-30