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Python | Check if a variable is string

• Last Updated : 22 May, 2019

While working with different datatypes, we might come across a time, where we need to test the datatype for its nature. This article gives ways to test a variable against the data type it is. Let’s discuss certain ways in which this task can be done.

Method #1 : Using `isinstance(x, str)`

This method can be used to test whether any variable is a particular datatype. By giving the second argument as “str”, we can check if the variable we pass is a string or not.

 `# Python3 code to demonstrate``# Check if variable is string ``# using isinstance()`` ` `# initializing string ``test_string ``=` `"GFG"`` ` `# printing original string ``print``(``"The original string : "` `+` `str``(test_string))`` ` `# using isinstance()``# Check if variable is string ``res ``=` `isinstance``(test_string, ``str``)`` ` `# print result``print``(``"Is variable a string ? : "` `+` `str``(res))`
Output :
```The original string : GFG
Is variable a string ? : True
```

Method #2 : Using `type()`

This task can also be achieved using the type function in which we just need to pass the variable and equate with a particular type.

 `# Python3 code to demonstrate``# Check if variable is string ``# using type()`` ` `# initializing string ``test_string ``=` `"GFG"`` ` `# printing original string ``print``(``"The original string : "` `+` `str``(test_string))`` ` `# using type()``# Check if variable is string ``res ``=` `type``(test_string) ``=``=` `str`` ` `# print result``print``(``"Is variable a string ? : "` `+` `str``(res))`
Output :
```The original string : GFG
Is variable a string ? : True
```

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