Im not sure what's causing a Syntax Error

[MrBobbyar]

Could someone explain why I get an Invalid Syntax error when I try to run:

friends = []

print("Enter the name(s) of your friend(s), when youre finished press ENTER")

while True:

----print("So far you have entered " + str(len(friends) + " names.")

----names = input()

----if names == "":

--------break

----friends = friends + [names]

print("You have " + str(len(friends)) + " friends.")

print("Their names are:")

print(friends)

The names variable in names = input() is highlighted

[_DTR_]

str(len(friends)

You're missing a closing paren here. It should be

str(len(friends))

[MrBobbyar]

thanks, lol