We can convert numbers to strings using the str[] method. We’ll pass either a number or a variable into the parentheses of the method and then that numeric value will be converted into a string value.
To convert the integer 12 to a string value, you can pass 12 into the str[] method:
str[12]
Output
'12'
The quotes around the number 12 signify that the number is no longer an integer but is now a string value.
With variables we can begin to see how practical it can be to convert integers to strings. Let’s say we want to keep track of a user’s daily programming progress and are inputting how many lines of code they write at a time. We would like to show this feedback to the user and will be printing out string and integer values at the same time:
user = "Sammy"
lines = 50
print["Congratulations, " + user + "! You just wrote " + lines + " lines of code."]
When we run this code, we receive the following error:
Output
TypeError: Can't convert 'int' object to str implicitly
We’re not able to concatenate strings and integers in Python, so we’ll have to convert the variable lines to be a string value:
user = "Sammy"
lines = 50
print["Congratulations, " + user + "! You just wrote " + str[lines] + " lines of code."]
Now, when we run the code, we receive the following output that congratulates our user on their progress:
Output
Congratulations, Sammy! You just wrote 50 lines of code.
If you want to learn more about converting Python data types, check out our How To Convert Data Types in Python 3 tutorial. You can also find more Python topics in our How To Code in Python 3 series.
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In Python an integer can be converted into a string using the built-in str[] function. The str[] function takes in any python data type and converts it into a string. But use of the str[] is not the only way to do so. This type of conversion can also be done using the “%s” keyword, the .formatfunction or using f-stringfunction.
Below is the list of possible ways to convert an integer to string in python:
1. Using str[] function
Syntax: str[integer_value]
Example:
Python3
num = 10
print["Type of variable before convertion : ", type[num]]
converted_num = str[num]
print["Type After convertion : ",type[converted_num]]
Output:
Type of variable before convertion : Type After convertion :
2. Using “%s” keyword
Syntax: “%s” % integer
Example:
Python3
num =
10
print["Type of variable before convertion : ", type[num]]
converted_num = "% s" % num
print["Type after convertion : ", type[converted_num]]
Output:
Type of variable before convertion : Type after convertion :
3. Using .format[] function
Syntax: ‘{}’.format[integer]
Example:
Python3
num = 10
print["Type before convertion : ", type[num]]
converted_num = "{}".format[num]
print["Type after convertion :",type[converted_num]]
Output:
Type before convertion : Type after convertion :
4. Using f-string
Syntax: f'{integer}’
Example:
Python3
num = 10
print["Type before convertion : ",type[num]]
converted_num = f'{num}'
print["Type after convetion : ", type[converted_num]]
Output:
Type before convertion : Type after convetion :
5. Using __str__[] method
Syntax: Integer.__str__[]
Python3
num = 10
print["Type before convertion : ",type[num]]
converted_num = num.__str__[]
print["Type after convetion : ", type[converted_num]]
Output:
Type before convertion : Type after convetion :