index of substring in a string python code example

Example 1: python string index of

sentence = 'Python programming is fun.'

result = sentence.index('is fun')
print("Substring 'is fun':", result)

result = sentence.index('Java')
print("Substring 'Java':", result)

Example 2: python get index of substring in liast

def index_containing_substring(the_list, substring):
    for i, s in enumerate(the_list):
        if substring in s:
              return i
    return -1

Example 3: python get index of substring in liast

index = [idx for idx, s in enumerate(l) if 'tiger' in s][0]