Given a list, the task is to write a Python program to check whether a list contains a particular string or not.
Examples:
Input: l=[1, 1.0, ‘have’, ‘a’, ‘geeky’, ‘day’]; s=’geeky’
Output: geeky is present in the list
Input: l=[‘hello’,’ geek’, ‘have’, ‘a’, ‘geeky’, ‘day’]; s=’nice’
Output: nice is not present in the list
Method #1: Using in operator
The in operator comes handy for checking if a particular string/element exists in the list or not.
Example:
Python3
# assign listl = [1, 2.0, 'have', 'a', 'geeky', 'day'] # assign strings = 'geeky' # check if string is present in the listif s in l: print(f'{s} is present in the list')else: print(f'{s} is not present in the list') |
Output:
geeky is present in the list
Method #2: Using count() function
The count() function is used to count the occurrence of a particular string in the list. If the count of a string is more than 0, it means that particular string exists in the list, else that string doesn’t exist in the list.
Example:
Python3
# assing listl = ['1', 1.0, 32, 'a', 'geeky', 'day'] # assign strings = 'prime' # check if string is present in listif l.count(s) > 0: print(f'{s} is present in the list')else: print(f'{s} is not present in the list') |
Output:
prime is not present in the list
Method #3: Using List Comprehension
List comprehensions are used for creating new lists from other iterables like tuples, strings, arrays, lists, etc. It is used to transform iterative statements into formulas.
Example:
Python3
# assign listl = ['hello', 'geek', 'have', 'a', 'geeky', 'day'] # assign strings = 'geek' # list comprehensioncompre = [i for i in l if s in l] # check if sting is present in listif len(compre) > 0: print(f'{s} is present in the list')else: print(f'{s} is not present in the list') |
Output:
geeky is present in the list
Method #4: Using any() function
The any() function is used to check the existence of an element in the list. it’s like- if any element in the string matches the input element, print that the element is present in the list, else, print that the element is not present in the list.
Example:
Python3
# assign listl = ['hello', 'geek', 'have', 'a', 'geeky', 'day'] # assign strings = 'prime' # check if string is present in listif any(s in i for i in l): print(f'{s} is present in the list')else: print(f'{s} is not present in the list') |
Output:
prime is not present in the list
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