How to Convert integers to strings in Python 3

Often you will need to convert integers to strings in python programming, especially if you want to concatenate integers with strings. In this tutorial we are going to learn how to convert python int to string in python 3.

In python 3 str() function used to convert integers to strings.

Python has a built-in function str which converts the passed argument into a string format.

Example :

In the Above example, str() function will convert variable x to a string. We can verify this by using, the type() function.

This will output

Concatenate Numbers and Strings in Python 3

Python programing language does not allow to Concatenate numbers with strings, for example.

The Above code will produce following error

So we need to convert the int variable age to string using the python str() function, as below example.

This will output

Python 3 String Formatting

If you want to add numbers within a string without converting, then you have to use the python 3 format() method.

In the above example, format() function will replace curly braces inside the string (“{}”) with num1 and num2 respectively. The code will output.

Python 3 str() function can also use to convert other data types to strings, including float, list and dictionaries.

How do I convert a string such as x=’12345′ to an integer (int) under Python programming language? How can I parse python string to integer?
You need to use int(s) to convert a string or number to an integer. For testing purpose, defined a string called x=’123456′, run:

You may also need to use float(s) to convert a string or number to a floating point number or combination of both as follows:

int(s)
float(s)
int(float(s))

Examples

Confirm the object type:

Sample outputs:

Convert a string to an int and store it to i, run:

Sample outputs:

However, the following string to int will fail:

Sample outputs:

Try the following solution:

Finally, you can also use floating point class for decimal arithmetic:

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