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# to test keyword-only arguments
# simplest case
def f(*, a):
print(a)
f(a=1)
# with 2 keyword-only args
def f(*, a, b):
print(a, b)
f(a=1, b=2)
f(b=1, a=2)
# positional followed by bare star
def f(a, *, b, c):
print(a, b, c)
f(1, b=3, c=4)
f(1, c=3, b=4)
f(1, **{'b':'3', 'c':4})
try:
f(1)
except TypeError:
print("TypeError")
try:
f(1, b=2)
except TypeError:
print("TypeError")
try:
f(1, c=2)
except TypeError:
print("TypeError")
# with **kw
def f(a, *, b, **kw):
print(a, b, kw)
f(1, b=2)
f(1, b=2, c=3)
# with named star
def f(*a, b, c):
print(a, b, c)
f(b=1, c=2)
f(c=1, b=2)
# with positional and named star
def f(a, *b, c):
print(a, b, c)
f(1, c=2)
f(1, 2, c=3)
f(a=1, c=3)
# lambda as kw-only arg (exposes nested behaviour in compiler)
def f(*, x=lambda:1):
return x()
print(f())
print(f(x=f))
print(f(x=lambda:2))
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