How to convert an int to a string in Python
Use f'{num}' or str(num) to turn an integer into its string representation instantly.
num = 42
s1 = str(num)
s2 = f"{num}"
print(s1, s2)The snippet assigns an integer to num, then creates two string versions: s1 using the built-in str() function and s2 using an f-string. Both produce a plain str object that can be concatenated, written to files, or passed to APIs; the final print shows they are identical.
Using the native str() or an f-string is the most direct, zero-dependency method. They handle any size integer, respect sign, and avoid the overhead of older %-formatting. A common gotcha is that booleans are subclasses of int, so str(True) yields "True"; if you need strict int handling, add an explicit isinstance check.
Variations
Using format() method
num = 42
s = "{}".format(num)
print(s)Older style, works in all Python versions, but f-strings are clearer.
Safe conversion with type check
def safe_int_to_str(value):
if isinstance(value, int):
return str(value)
raise TypeError("value must be int")
print(safe_int_to_str(7))Raises explicit error if input is not an int, avoids accidental conversion of booleans.
Batch conversion of ints
ints = [1, 2, 3]
strs = [str(i) for i in ints]
print(strs)List comprehension keeps conversion fast and readable.
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