'module'对象不可调用 - 在另一个文件中调用方法 [英] 'module' object is not callable - calling method in another file

问题描述

我有一个公平的java背景，试图学习python。我遇到了一个问题，了解如何在不同的文件中访问其他类的方法。我一直在让模块对象不可调用。

I have a fair background in java, trying to learn python. I'm running into a problem understanding how to access methods from other classes when they're in different files. I keep getting module object is not callable.

我做了一个简单的函数来查找一个文件中列表中最大和最小的整数，并希望访问这些函数另一个文件中的另一个类。

I made a simple function to find the largest and smallest integer in a list in one file, and want to access those functions in another class in another file.

感谢任何帮助，谢谢。

class findTheRange():

    def findLargest(self, _list):
        candidate = _list[0]
        for i in _list:
            if i > candidate:
                candidate = i
        return candidate

    def findSmallest(self, _list):
        candidate = _list[0]
        for i in _list:
            if i < candidate:
                candidate = i
        return candidate

---

---

 import random
 import findTheRange

 class Driver():
      numberOne = random.randint(0, 100)
      numberTwo = random.randint(0,100)
      numberThree = random.randint(0,100)
      numberFour = random.randint(0,100)
      numberFive = random.randint(0,100)
      randomList = [numberOne, numberTwo, numberThree, numberFour, numberFive]
      operator = findTheRange()
      largestInList = findTheRange.findLargest(operator, randomList)
      smallestInList = findTheRange.findSmallest(operator, randomList)
      print(largestInList, 'is the largest number in the list', smallestInList, 'is the                smallest number in the list' )

推荐答案

问题出在 import 行。您正在导入模块，而不是类。假设您的文件名为 other_file.py （与java不同，没有一个类，一个文件的规则）：

The problem is in the import line. you are importing a module, not a class. assuming your file is named other_file.py (unlike java, again, there is no rule of "one class, one file"):

from other_file import findTheRange

如果你的文件名为findTheRange，遵循java的惯例，那么你应该从findTheRange导入findTheRange

if your file is named findTheRange too, following java's convenions, then you should write

from findTheRange import findTheRange

您也可以像导入随机一样导入它：

you can also import it just like you did with random:

import findTheRange
operator = findTheRange.findTheRange()

---

其他一些评论：

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Some other comments:

a）@Daniel Roseman是对的。你根本不需要课程。 Python鼓励程序编程（当然它适合）

a) @Daniel Roseman is right. You do not need classes here at all. Python encourages procedural programming (when it fits, of course)

b）你可以直接构建列表：

b) You can build the list directly:

  randomList = [random.randint(0, 100) for i in range(5)]

c）您可以像在java中一样调用方法：

c) You can call methods in the same way you do in java:

largestInList = operator.findLargest(randomList)
smallestInList = operator.findSmallest(randomList)

d）你可以使用内置函数和巨大的python库：

d) You can use built in function, and the huge python library:

largestInList = max(randomList)
smallestInList = min(randomList)

e）如果您仍想使用课程，则不需要 self ，你可以使用 @staticmethod ：

e) If you still want to use a class, and you don't need self, you can use @staticmethod:

class findTheRange():
    @staticmethod
    def findLargest(_list):
        #stuff...

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