预计在python中有两个空行pep8警告

Question

我正在使用vim编辑器作为python IDE.下面是一个简单的python程序来计算数字的平方根:

import cmath
def sqrt():
    try:
        num = int(input("Enter the number : "))
        if num >= 0:
            main(num)
        else:
            complex(num)
    except:
        print("OOPS..!!Something went wrong, try again")
        sqrt()
    return

def main(num):
    squareRoot = num**(1/2)
    print("The square Root of ", num, " is ", squareRoot)
    return

def complex(num):
    ans = cmath.sqrt(num)
    print("The Square root if ", num, " is ", ans)
    return

sqrt()

警告是:

1-square-root.py|2 col 1 C| E302 expected 2 blank lines, found 0 [pep8]
1-square-root.py|15 col 1 C| E302 expected 2 blank lines, found 1 [pep8]
1-square-root.py|21 col 1 C| E302 expected 2 blank lines, found 0 [pep8]

你能告诉我这些警告为什么会来吗？

Answer 1

import cmath


def sqrt():
    try:
        num = int(input("Enter the number : "))
        if num >= 0:
            main(num)
        else:
            complex_num(num)
    except:
        print("OOPS..!!Something went wrong, try again")
        sqrt()
    return


def main(num):
    square_root = num**(1/2)
    print("The square Root of ", num, " is ", square_root)
    return


def complex_num(num):
    ans = cmath.sqrt(num)
    print("The Square root if ", num, " is ", ans)
    return

sqrt()

之前的将解决您的PEP8问题.导入后,您需要在开始代码之前有2个新行.此外,每个之间def foo()你需要有2个.

在您的情况下,导入后您有0,并且每个函数之间有1个换行符.作为PEP8的一部分,您需要在代码结束后使用换行符.不幸的是,当我将代码粘贴到此处时,我不知道如何显示它.

注意命名,它也是PEP8的一部分.我改变complex,以complex_num防止与内置的混乱complex.

最后,他们只是警告,如果需要可以忽略它们.