Python TypeError

buaaspy

class AyMethod:
    def __init__(self, signature = 'no_such_method'):
        self.signature = signature
        self.args = []
        self.code = []
        self.methodname = ''

    def setArg(arg):
        self.args = arg

    def setMethodName(name):
        self.methodname = name

    def addCode(instruction):
        self.code.append(instruction)

    def loadFromFile(filename):
        for line in open(filename):
            self.addcode(line)

    def loadFromString(string):
        for line in str(string).split('\n'):
            self.addcode(line)

if __name__ == '__main__':
    testMethod = AyMethod()
    #testMethod.loadFromString('1')
    testMethod.setMethodName('test_method')
    print(testMethod.methodname)

--------------------------------------------------------------------
in <module>
    testMethod.setMethodName('test_method')
TypeError: setMethodName() takes exactly 1 positional argument (2 given)

darkn3ss

一般类方法需要强制添加参数self

1. class AyMethod:
   
2.     def __init__(self, signature = 'no_such_method'):
   
3.         self.signature = signature
   
4.         self.args = []
   
5.         self.code = []
   
6.         self.methodname = ''
   
7. 
   
8.     def setArg(arg):
   
9.         self.args = arg
   
10. 
    
11.     def setMethodName(self, name):
    
12.         self.methodname = name
    
13. 
    
14.     def addCode(instruction):
    
15.         self.code.append(instruction)
    
16. 
    
17.     def loadFromFile(filename):
    
18.         for line in open(filename):
    
19.             self.addcode(line)
    
20. 
    
21.     def loadFromString(string):
    
22.         for line in str(string).split('\n'):
    
23.             self.addcode(line)
    
24. 
    
25. if __name__ == '__main__':
    
26.     testMethod = AyMethod()
    
27.     #testMethod.loadFromString('1')
    
28.     testMethod.setMethodName('test_method')
    
29.     print(testMethod.methodname)

复制代码

linux_c_py_php

类成员方法要有self参数.