Pandas: Find the index of a substring of DataFrame with beginning and end position
Pandas: String and Regular Expression Exercise-8 with Solution
Write a Pandas program to find the index of a substring of DataFrame with beginning and end position.
Sample Solution:
Python Code :
import pandas as pd
df = pd.DataFrame({
'name_code': ['c0001','1000c','b00c2', 'b2c02', 'c2222'],
'date_of_birth ': ['12/05/2002','16/02/1999','25/09/1998','12/02/2022','15/09/1997'],
'age': [18.5, 21.2, 22.5, 22, 23]
})
print("Original DataFrame:")
print(df)
print("\nIndex of a substring in a specified column of a dataframe:")
df['Index'] = list(map(lambda x: x.find('c', 0, 5), df['name_code']))
print(df)
Sample Output:
Original DataFrame: name_code date_of_birth age 0 c0001 12/05/2002 18.5 1 1000c 16/02/1999 21.2 2 b00c2 25/09/1998 22.5 3 b2c02 12/02/2022 22.0 4 c2222 15/09/1997 23.0 Index of a substring in a specified column of a dataframe: name_code date_of_birth age Index 0 c0001 12/05/2002 18.5 0 1 1000c 16/02/1999 21.2 4 2 b00c2 25/09/1998 22.5 3 3 b2c02 12/02/2022 22.0 2 4 c2222 15/09/1997 23.0 0
Python Code Editor:
Have another way to solve this solution? Contribute your code (and comments) through Disqus.
Previous: Write a Pandas program to find the index of a given substring of a DataFrame column.
Next: Write a Pandas program to check whether alpha numeric values present in a given column of a DataFrame.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
Python: Tips of the Day
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 dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
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")
Ref: https://bit.ly/3fy0R6m
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework