我在代码学院上了很多课,但是我很沮丧,因为有些编译器拒绝返回相同结果的答案。所以,我决定离开一段时间,用我学过的计算器工具创建我自己的程序。它运行不正常。当它在菜单上时,if/elif/else语句不起作用。程序似乎忽略了输入。所以,这是我的第一个程序代码。。。在
import math
user_choice=(">>")
def add():
print "What two numbers would you like to add?"
a= int(raw_input(user_choice))
b= int(raw_input(user_choice))
c= a + b
print c
def sub():
print "What two numbers would you like to subtract?"
a=int(raw_input(user_choice))
b=int(raw_input(user_choice))
c=a-b
print c
def mult():
print "What two numbers would you like to multiply?"
a=int(raw_input(user_choice))
b=int(raw_input(user_choice))
c= a*b
print c
def div():
print "What two numbers would you like to divide?"
a=int(raw_input(user_choice))
b=int(raw_input(user_choice))
c=a/b
print c
def exp():
print "What number would you like to power?"
a=int(raw_input(user_choice))
print "By what number would you like it to be powered to?"
b=int(raw_input(user_choice))
c= math.pow(a,b)
print c
def square():
print "What number would you like to square root?"
a=int(raw_input(user_choice))
b=math.sqrt(a)
print b
print "+---------------------------+"
print "| Welcome to my basic |"
print "| calculator! |"
print "| |"
print "|What would you like to do? |"
print "| |"
print "|1: Addition |"
print "|2: Subtraction |"
print "|3: Multiplication |"
print "|4: Division |"
print "|5: Exponents |"
print "|6: Square Root |"
print "|7: Quit |"
print "| |"
print "+---------------------------+"
if int(raw_input(user_choice)) == "1":
add()
elif int(raw_input(user_choice)) == "2":
sub()
elif int(raw_input(user_choice)) == "3":
mult()
elif int(raw_input(user_choice)) == "4":
div()
elif int(raw_input(user_choice)) == "5":
exp()
elif int(raw_input(user_choice)) == "6":
square()
elif int(raw_input(user_choice)) == "7":
exit()
else:
print "Sorry, I didn't understand your entry.Try entering a value 1-7"
目前还没有“如果出错”的代码,但我坚持要让它正常工作。所有的功能都起作用。只是无法让选择发挥作用。在
除了其他人已经指出的事情,我将离开这里,我个人将如何执行它。这当然不是最好的方法,但我希望它能给你一些想法(你要么接受要么拒绝),以及你可以进一步研究的要点,以便扩展你的python技能:
int(rawinput())
将返回一个integer
,它不是==
到{int()
,它应该可以工作了。在改变
到
^{pr2}$数字不能用引号引起来,只能用文字字符串。
建议,您可以只获取一次输入,然后执行if/elif/else条件测试,例如:
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