Question

我是编程的新手。在那里直接射击那一个。现在我要列出三个代码模块：

def GCD(x,y):
#gives the Greatest Common Divisor of two values.
while y != 0:
    r = x
    while r >= y: #these two lines are used to 
        r -= y    #calculate remainder of x/y
    x = y
    y = r
print x

这是我写的原始程序，基于欧几里德算法的GCD。它功能正常。我现在想要删除上面的两个注释行，并用调用我做的另一个模块替换它，它计算余数：

剩余计算器

def xy(x, y):
#Gives the remainder of the division of x by y. Outputs as r.
   while x >= y:
       x -= y
   r = x

此程序也可正常运行。我想在我编辑的程序中使用名称'r'的值。我试图在下面这样做，但它会导致问题：

def GCD(x,y):
import remainder
#gives the Greatest Common Divisor of two values.
while y != 0:
    remainder.xy(x,y)
    from remainder import r #here is the problem. This line is my attempt at 
                            #importing the value of r from the remainder calculating
                            #module into this module. This line is incorrect. 
    x = y
    y = r #Python cannot find 'r'. I want to use the value for 'r' from the execution
          #of the remainder calculating module. Attempts to find how have been
          #unsuccessful.
print x

我需要了解如何在我的第二个GCD模块中使用我的xy模块中的'r'计算值。我尝试过使用

global r

在我的模块中，虽然我没有成功。我不确定我是否正确地解释了'全球'的功能。

感谢您的帮助。

Jet Holt

Answer 1

如果我理解正确的话：

from remainder import xy
def GCD(x,y): 
    #gives the Greatest Common Divisor of two values.
    while y != 0:
        r = xy(x,y)
        x = y
        y = r 
    print x

和

def xy(x, y):
#Gives the remainder of the division of x by y. Outputs as r.
   while x >= y:
       x -= y
   return x

Python - 尝试使用不同模块中一个模块的名称值

1 个答案: