voidex/20-29 Areas/20 Programming/20.01 Python/len().md

title	tags	aliases
len()	python functions strings	len length string-length

[!note] Concept
The len() function returns the number of characters in a string (including spaces and punctuation).

[!example] Example

len('hello')                                # 5
len('My very energetic monster just scarfed nachos.')  # 46
len('')                                     # 0

name = "Alice"
print("The length of your name is:")
print(len(name))                            # 5

[!important] Best Practices

• len() always returns an integer.
• You must convert the result to a string when concatenating:

print("I am " + str(29) + " years old.")  # OK

• Mixing integers and strings with + will raise a TypeError.

[!info] Related Notes
functions
typeConversions
expressions
pythonSyntaxOverview