16.2: Type Conversion Functions
- Page ID
- 15363
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Python provides built-in functions that convert values from one type to another. The int function takes any value and converts it to an integer, if it can, or complains otherwise:
>>> int('32') 32 >>> int('Hello') ValueError: invalid literal for int(): Hello
int
can convert floating-point values to integers, but it doesn’t round off; it chops off the fraction part:
>>> int(3.99999) 3 >>> int(-2.3) -2
float
converts integers and strings to floating-point numbers:
>>> float(32) 32.0 >>> float('3.14159') 3.14159
Finally, str
converts its argument to a string:
>>> str(32) '32' >>> str(3.14159) '3.14159'