TypeError：必须为str，而不是buildin_function_or_method

Question

I have a bit of a problem at the moment, I'm quite new to python and to people who code a lot this might seem really easy to answer. We've been tasked to do a '99 bottles of beer on the wall' challenge and I wanted to make mine slightly better by asking the user what they'd like in the bottle. However I keep getting an error: TypeError: must be str, not builtin_function_or_method

input("What would you like inside your bottle?")

def sing(b, end):
    print(b or 'No more', 'bottle'+('s' if b-1 else ''), end)

for i in range(99, 0, -1):
    sing(i, 'of'+input+'on the wall,')
    sing(i, 'of'+input+',')
    print('Take one down, pass it around,')
    sing(i-1, 'of'+input+'on the wall.\n')

any help would be much appreciated, thanks :3

Answer 1

input() method returns value to be assigned to a variable. Compare with the docs . Now you are referencing a method not a variable.

You need something like

something = input('Say sth. ')
print(something)

Answer 2

input is a builtin function, so when you do 'of'+input+'on the wall' , you just try to concatenate a function to a string, which doesn't make a lot of sense ;)
(the interpreter is explicitly telling you that)

input returns a string you doesn't assign to a variable, so try user_input = input("What would you like inside the bootle?") and then using user_input instead of input in your code.