Is there any way to tell if a function object was a lambda or a def?

Question

Consider the two functions below:

def f1():
    return \"potato\"

f2 = lambda: \"potato\"
f2.__name__ = f2.__qualname__ = \"f2\"

Short of

Answer 1

Here

def f1():
    return "potato"


f2 = lambda: "potato"


def is_lambda(f):
    return '' in str(f.__code__)


print(is_lambda(f1))
print(is_lambda(f2))

output

False
True