user_input() = input("Please enter a number: ") ^ SyntaxError: cannot assign to function call

Question

要求用户输入一个数字并检查输入是否为'POSITIVE'、'ZERO'、'NEGATIVE'

def is_positive():
 
    # input() returns str
    user_input() = input("Please enter a number: ")
    
    # cast input into int -> int()
    n = int(user_input)
    
    # check conditions
    if n > 0:
        print("POSITIVE")
    elif n == 0:
        print("ZERO")
    else:
        print("NEGATIVE")

Answer 1

关闭只需将用户输入的变量名称更改为没有括号即可。括号用于调用函数，这就是引发错误的原因。

user_input = input("Please enter a number: ")

user_input() = input("Please enter a number: ") ^ SyntaxError: cannot assign to function call

user_input() = input("Please enter a number: ") ^ SyntaxError: cannot assign to function call

if-statement

conditional-statements