Python String isidentifier() Method

Example

Check if the string is a valid identifier:

txt = "Demo"
x = txt.isidentifier()
print(x)

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Definition and Usage

If the string is a valid identifier, the isidentifier() method returns True, otherwise it returns False.

If the string contains only letters, numbers, and underscores (a-z, 0-9, _) and does not start with a number or contain any spaces, it is considered a valid identifier. A valid identifier cannot start with a number or contain any spaces.

Syntax

string.isidentifier()

Parameter Value

No parameters.

More Examples

Example

Check if the string is a valid identifier:

a = "MyFolder"
b = "Demo002"
c = "2bring"
d = "my demo"
print(a.isidentifier())
print(b.isidentifier())
print(c.isidentifier())
print(d.isidentifier())

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