python

时间:2019-02-26 11:40:33

标签: python python-3.x class methods self

在尝试使用类和方法以及如何在类和方法之间传递变量的同时,我编写了一些脚本来尝试理解机制。 这样做时,我遇到了一个问题,即我的功能之一未定义:

NameError: name 'exclaim' is not defined

我以为使用自我可能会解决,但我只是四处探寻

NameError: name 'self' is not defined

关于这一点,我遇到了许多资料,这使我着眼于方法的缩进级别,并通过HelloWorld.exclaim()进行调用 遇到同样的问题。

请参阅我的代码:(script1)

import datasource

class HelloWorld:

    def exclaim():
        number1 = input("enter a number")
        datasource.Class2.method3.impvariable1 = number1

    def main():
        HelloWorld.exclaim()
        print(datasource.Class1.method1.variable1)
        print(datasource.Class2.method2.variable2)
        print(datasource.Class2.method3.variable3)

    if __name__ == '__main__':
        main()

脚本2:

#datasource.py
class Class1:
    def method1():
        variable1 = "Hello "

class Class2:
    def method2():
        variable2 = "World"
    def method3():
        impvariable1 = 0
        variable3 = "!"
        for x in range(impvariable1):
            variable3 = variable3 + "!"

我也尝试过(其他迭代次数为100)

    #datahandler.py
import datasource

class HelloWorld:

    def exclaim(self):
        number1 = input("enter a number")
        datasource.Class2.method3.impvariable1 = number1

def main(self):
    HelloWorld.exclaim(self)
    print(datasource.Class1.method1.variable1)
    print(datasource.Class2.method2.variable2)
    print(datasource.Class2.method3.variable3)

if __name__ == '__main__':
    main(self)

产生;

NameError: name 'self' is not defined

1 个答案:

答案 0 :(得分:2)

import datasource

class HelloWorld:

    def exclaim(self):
        number1 = input("enter a number")
        datasource.Class2.method3.impvariable1 = number1

def main():
    obj = HelloWorld()
    obj.exclaim()
    print(datasource.Class1.method1.variable1)
    print(datasource.Class2.method2.variable2)
    print(datasource.Class2.method3.variable3)

if __name__ == '__main__':
    main()