问如何将两个函数打包成一个模块？

EN

def newtons_cubed(y):
    x=1
    N=0
    previous_x = None

    while N < 50:
        x=1/3*(2*(x) + y/(x**2))
        N=N+1
        print('Iteration number:',N)
        print('Estimation:',x)
        print('Previous x:',previous_x)
        print()

        if previous_x is not None:
            if abs(x - previous_x) < 0.0001:
                print('Difference negligible')
                print('Final Estimation:',x)
                return

        previous_x = x

    print(previous_x)

def newtons_fourth(y):
    x=1
    N=0
    previous_x = None
    final = None

    while N < 50:
        x=1/4*(3*(x) + y/(x**3))
        N=N+1
        print('Iteration number:',N)
        print('Estimation:',x)
        print('Previous x:',previous_x)
        print()

        if previous_x is not None:
            if abs(x - previous_x) < 0.0001:
                final=1
                print('Difference negligible')
                print('Final Estimation:',x)
                return

    previous_x = x

    if final!=1:
        print(previous_x)

import CubedModule as cm 
import FourthModule as fm 

y= int(input('Enter value for estimations:'))
print()

print('Cubed root estimation:')
print()
cm.newtons_cubed(y)

print()
print('Fourth root estimation:')
print()
fm.newtons_fourth(y)

x = Classname() #creates an instance of the class now named x
x.start() # runs the function start inside the class.  Can pass variables, or use existing variables under the self. notation.  

import os
from os import getcwd #function or class inside the modeul

print(os.getcwd())
print(getcwd())

import myfolder.mymodule
from myfolder import mymodule # the same as above