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Python - custom string contains() method
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In this article, we would like to show you how to check if the string contains a substring in Python.
Quick solution:
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text = "ABC"2
print("BC" in text) # True
In this example, we use in operator to create a custom implementation of the string contains() method and check if text contains some words.
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text = "dirask is cool"2
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word_1 = "cool"4
word_2 = "abc"5
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def contains(string, phrase):8
return phrase in string9
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print(contains(text, word_1)) # True12
print(contains(text, word_2)) # FalseOutput:
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True2
FalseNote:
You can also use
string.find()method to find index of the specified substring.xxxxxxxxxx1text = "dirask is cool"2print(text.find("is")) # 7
