ModuleNotFoundError:__main__不是软件包是什么意思? [英] ModuleNotFoundError: What does it mean __main__ is not a package?

问题描述

我正在尝试从控制台运行模块.我的目录的结构是这样的:

I am trying to run a module from the console. The structure of my directory is this:

我正在尝试使用以下命令从problem_set_02目录运行模块p_03_using_bisection_search.py:

I am trying to run the module p_03_using_bisection_search.py, from the problem_set_02 directory using:

$ python3 p_03_using_bisection_search.py

p_03_using_bisection_search.py中的代码是:

__author__ = 'm'


from .p_02_paying_debt_off_in_a_year import compute_balance_after


def compute_bounds(balance: float,
                   annual_interest_rate: float) -> (float, float):

    # there is code here, but I have omitted it to save space
    pass


def compute_lowest_payment(balance: float,
                           annual_interest_rate: float) -> float:

    # there is code here, but I have omitted it to save space
    pass    

def main():
    balance = eval(input('Enter the initial balance: '))
    annual_interest_rate = eval(input('Enter the annual interest rate: '))

    lowest_payment = compute_lowest_payment(balance, annual_interest_rate)
    print('Lowest Payment: ' + str(lowest_payment))


if __name__ == '__main__':
    main()

我正在导入p_02_paying_debt_off_in_a_year.py中的函数，其代码为:

I am importing a function that is in p_02_paying_debt_off_in_a_year.py which code is:

__author__ = 'm'


def compute_balance(balance: float,
                    fixed_payment: float,
                    annual_interest_rate: float) -> float:

    # this is code that has been omitted
    pass


def compute_balance_after(balance: float,
                          fixed_payment: float,
                          annual_interest_rate: float,
                          months: int=12) -> float:

    # Omitted code
    pass


def compute_fixed_monthly_payment(balance: float,
                                  annual_interest_rate: float) -> float:

    # omitted code
    pass


def main():
    balance = eval(input('Enter the initial balance: '))
    annual_interest_rate = eval(
        input('Enter the annual interest rate as a decimal: '))
    lowest_payment = compute_fixed_monthly_payment(balance,
                                                   annual_interest_rate)
    print('Lowest Payment: ' + str(lowest_payment))


if __name__ == '__main__':
    main()

我遇到以下错误:

ModuleNotFoundError: No module named '__main__.p_02_paying_debt_off_in_a_year'; '__main__' is not a package

我不知道如何解决此问题.我尝试添加__init__.py文件，但仍然无法正常工作.

I have no idea how to solve this issue. I have tried adding a __init__.py file, but it is still not working.

推荐答案

只需删除相对导入的点，然后执行:

Simply remove the dot for the relative import and do:

from p_02_paying_debt_off_in_a_year import compute_balance_after

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