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1.模板檔案:

myfn1.py

def plus(a,b):
    c=a+b
    return c

def less(a,b):
    c=a-b
    return c

def Multiply(a,b):
    c=a*b
    return c

def exceptn(a,b):
    c=a/b
    return c

2.主程式檔案:

 

myfn2.py

import myfn1

a = eval(input("請輸入數字1 :"))
cal=input("請輸入運算+ - * /  :")
b= eval(input("請輸入數字2 :"))

if cal=="+":
    total=myfn1.plus(a,b)
elif cal=="-":
    total=myfn1.less(a,b)
elif cal=="*":
    total=myfn1.Multiply(a,b)
elif cal=="/":
    total=myfn1.exceptn(a,b)
    
print(a,cal,b,"=",total)

看看效果

---

再更精簡

myfn1.py(模組)

def plus(a,b):
   c=a+b
   return c
def less(a,b):
   c=a-b
   return c
def Multiply(a,b):
   c=a*b
   return c
def exceptn(a,b):
   c=a/b
   return c
def totalcal(a,b,cul):
   if cul=="1":
       total=plus(a,b)
   elif cul=="2":
       total=less(a,b)
   elif cul=="3":
       total=Multiply(a,b)
   elif cul=="4":
       total=exceptn(a,b)
   
   return total

myfn2.py (主程式)

import myfn1
a = eval(input("請輸入數字1 :"))
cal=input("請輸入運算:1.+  2. -  3.*  4. /  :")
b= eval(input("請輸入數字2 :"))
a=myfn1.totalcal(a,b,cal)
print(a)

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