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Python: Check if a substring presents in a given list of string values

Python List: Exercise - 119 with Solution

Write a Python program to check if a substring presents in a given list of string values.

Sample Solution:

Python Code:

def find_substring(str1, sub_str):
   if any(sub_str in s for s in str1):
       return True
   return False

colors = ["red", "black", "white", "green", "orange"]
print("Original list:")
print(colors)
sub_str = "ack"
print("Substring to search:")
print(sub_str)
print("Check if a substring presents in the said list of string values:")
print(find_substring(colors, sub_str))
sub_str = "abc"
print("Substring to search:")
print(sub_str)
print("Check if a substring presents in the said list of string values:")
print(find_substring(colors, sub_str))

Sample Output:

Original list:
['red', 'black', 'white', 'green', 'orange']
Substring to search:
ack
Check if a substring presents in the said list of string values:
True
Substring to search:
abc
Check if a substring presents in the said list of string values:
False

Pictorial Presentation:

Python List: Check if a substring presents in a given list of string values.

Flowchart:

Flowchart: Check if a substring presents in a given list of string values.

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Python Code Editor:

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Previous: Write a Python program to find the difference between elements (n+1th – nth) of a given list of numeric values.
Next: Write a Python program to create a list taking alternate elements from a given list.

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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