Is there a way to automatically change the type of a variable when it arrives at a function, eg:
def my_func( str(x) ):
return x
x = int(1)
type(x)
x = my_func(x)
type(x)
I know this code won't work, but it's just to explain my question.
I also know I can just do x = my_func(str(x)), but I specifically want to make sure all variables coming into function will be string.
The simplest way to solve your problem would be to explicitly convert the input to a string, like so:
def my_func(x):
x = str(x)
# rest of your logic here
return x
If you don't want to do this explicitly, you could (as suggested in the comments) use a decorator:
from functools import wraps
def string_all_input(func):
# the "func" is the function you are decorating
@wraps(func) # this preserves the function name
def _wrapper(*args, **kwargs):
# convert all positional args to strings
string_args = [str(arg) for arg in args]
# convert all keyword args to strings
string_kwargs = {k: str(v) for k,v in kwargs.items()}
# pass the stringified args and kwargs to the original function
return func(*string_args, **string_kwargs)
return _wrapper
# apply the decorator to your function definition
@string_all_input
def my_func(x):
# rest of your logic here
return x
type(my_func(123))
str?