Python len and count

The Python len function

You'll often need to know how many characters a word has. For example, you want to loop round all the characters in a string of text, from zero to however many characters the string has. In which case, you can use the len() function:

myText = "supercalifragilisticexpialidocious"
textLength = len(myText)
print("Character count is:", textLength)

Notice that the len() function is not used with a dot, but just by itself. The text whose length you want to check goes between round brackets. You'll then get back a number, which you can do something with.

 

The Python count function

If you need to count how many times a single character, or a string of text, appears in another string of text, you can use the count() function.

myText = "Love, love, love - love is all you need."
wordcount = myText.count("love")
print(wordcount)

If you run the above code, the output window will display a figure of 3, meaning it has found love three times. It didn't count the first love because that has a capital letter. In between the round brackets of count(), we had all lowercase letters.

 

In the next lesson, you'll learn how to deal with white space in Python.

Python and White Space >