python编程中的错误

我对这段代码有问题，它说第17行的语法无效

import math    
def SA():
   side = int(input("What is the side of the square?: "))
   print("The Area of The Square is " + str(side**2) + ".")

def PA():
   hight = int(input("What is The Hight of The Parallelogram?: "))
   side = int(input("What is The side of The Parallelogram?: "))
   print("The Area of The Parallelogram is "+str(hight*side)+".")

def TA():
   hight = int(input("What is The Hight of The Triangle?: "))
   side = int(input("What is The Side of The Triangle?: "))
   print("The Area of Triangle is "+str((hight*side)/2)

def ca():
   r = int(input("What is the Radious of The Circle?: "))
   print("The Area of the Circle is " str(math.pi*r**2)

def main():
  op = input("Enter the operation You Want to do c = circle, s = square,     p = parallelogram, t = triangle: ")

  if op == "c":
      ca()
  elif op == "s":
      SA()
  elif op == "p":
      PA()
  elif op == "t":
      TA()
  else:
      print("INVALID OPERATION!")
      input("Press Enter To Continue...")
main()

如果有人能帮我，我将不胜感激。

---

谢谢。

在代码中查看我的评论：

#!/usr/bin/python
# -*- coding: utf-8 -*-

import math
def SA():
   side = int(input("What is the side of the square?: "))
   print("The Area of The Square is " + str(side**2) + ".")

def PA():
   hight = int(input("What is The Hight of The Parallelogram?: "))
   side = int(input("What is The side of The Parallelogram?: "))
   print("The Area of The Parallelogram is "+str(hight*side)+".")

def TA():
   hight = int(input("What is The Hight of The Triangle?: "))
   side = int(input("What is The Side of The Triangle?: "))
   # it's lack of a right bracket here
   print("The Area of Triangle is "+str((hight*side)/2))

def ca():
   r = int(input("What is the Radious of The Circle?: "))
   # it's lack of a comma and a right bracket here
   print("The Area of the Circle is ", str(math.pi*r**2))

def main():
  op = input("Enter the operation You Want to do c = circle, s = square,     p = parallelogram, t = triangle: ")

  if op == "c":
      ca()
  elif op == "s":
      SA()
  elif op == "p":
      PA()
  elif op == "t":
      TA()
  else:
      print("INVALID OPERATION!")
      input("Press Enter To Continue...")
main()

输出：

Enter the operation You Want to do c = circle, s = square,     p = parallelogram, t = triangle: 

---

你有很多小的语法错误。您还必须使用

raw\u input

而不是

input

。你知道为什么吗？为你锻炼

import math


def SA():
    side = int(input("What is the side of the square?: "))
    print("The Area of The Square is " + str(side**2) + ".")


def PA():
    hight = int(input("What is The Hight of The Parallelogram?: "))
    side = int(input("What is The side of The Parallelogram?: "))
    print("The Area of The Parallelogram is "+str(hight*side)+".")


def TA():
    hight = int(input("What is The Hight of The Triangle?: "))
    side = int(input("What is The Side of The Triangle?: "))
    print("The Area of Triangle is "+str((hight*side)/2))


def ca():
    r = int(input("What is the Radious of The Circle?: "))
    print("The Area of the Circle is "+str(math.pi*r**2))


def main():
    op = raw_input("Enter the operation You Want to do c = circle, s = square,     p = parallelogram, t = triangle: ")
    print 'You have entered : ', op
    if op == "c":
        ca()
    elif op == "s":
        SA()
    elif op == "p":
        PA()
    elif op == "t":
        TA()
    else:
        print("INVALID OPERATION!")
        input("Press Enter To Continue...")
main()

---

我建议您使用一些IDE，比如vim、emacs、pycharm、sublime或pyscriptor，它们可以帮助您找到这些语法错误/缩进错误

如果你能明确指出第17行是什么，那就太好了。

print（“三角形的面积是”+str（（高*边）/2）

和

print（“圆的面积是”str（math.pi*r**2）没有打印的结束标记。你应该考虑选择一个更好的开发环境。我的意思是你的编辑应该告诉你语法错误，也要标出正确的位置。如果我的答案有帮助，别忘了接受它。谢谢！非常感谢。我会努力更好地忽略我的工作。@ NikolayMiroshnichenkoNikolax，如果我的ANSWE。r帮助你，别忘了接受它。