print "This is to find the area or perimeter of a rectangle or triangle?"
print "Do you want to find the area or perimeter of a rectangle(r) or triangle(t)?"
l= raw_input("I want to find the area or perimeter of a ")
if l=='r':
print "Do you want to find the area(a) or perimeter(p) of your rectangle?"
a= raw_input(" I want to find the ")
if a=='p':
print "What is the length of the rectangle?"
b = int(raw_input("The length of the rectangle is "))
print "What is the width of the rectangle?"
c = int(raw_input("THe width of the rectangle is "))
d = (2 * b) + (2 * c)
print d
elif a=='a':
print "Got it. What is the length of your rectangle?"
x = int(raw_input("The length of the rectangle is "))
print "What is the width of your rectangle?"
y = int(raw_input("The width of the rectangle is "))
z = x * y
print z
if l=='t':
print "Do you want to find the area(a) or perimeter(p) of your triangle?"
m= raw_input("I want to find the "
if m == 'a':
print "What is the length of your triangle?"
n = int(raw_input("The length of the triangle is "
print "What is the width of your triangle?
o = int(raw_input("The width of the triagle is "
q = (n * o)/2
print q
elif m=='p'
print "What is the first length of your triangle?"
r = int(raw_input("The first length of the triangle is ")
print "What is the second length of the triangle?"
s = int(raw_input("The second length of the triangle is ")
print "What is the third length of the triangle?"
u = int(raw_input(" The third length of the triangle is ")
v = r + s + u
print v
它表示该行的输入错误，说明m=='a'。请帮忙。
答案 0 :(得分：2)
你有很多缺少方括号)。你必须检查它们是否匹配。每个(必须有相应的)。
此外，在:或if条件之后，您遗失了一些elif：
<强>固定
print "This is to find the area or perimeter of a rectangle or triangle?"
print "Do you want to find the area or perimeter of a rectangle(r) or triangle(t)?"
l = raw_input("I want to find the area or perimeter of a ")
if l == 'r':
print "Do you want to find the area(a) or perimeter(p) of your rectangle?"
a = raw_input(" I want to find the ")
if a == 'p':
print "What is the length of the rectangle?"
b = int(raw_input("The length of the rectangle is "))
print "What is the width of the rectangle?"
c = int(raw_input("THe width of the rectangle is "))
d = (2 * b) + (2 * c)
print d
elif a == 'a':
print "Got it. What is the length of your rectangle?"
x = int(raw_input("The length of the rectangle is "))
print "What is the width of your rectangle?"
y = int(raw_input("The width of the rectangle is "))
z = x * y
print z
if l == 't':
print "Do you want to find the area(a) or perimeter(p) of your triangle?"
m = raw_input("I want to find the ")
if m == 'a':
print "What is the length of your triangle?"
n = int(raw_input("The length of the triangle is "))
print "What is the width of your triangle?"
o = int(raw_input("The width of the triagle is "))
q = (n * o) / 2
print q
elif m == 'p':
print "What is the first length of your triangle?"
r = int(raw_input("The first length of the triangle is "))
print "What is the second length of the triangle?"
s = int(raw_input("The second length of the triangle is "))
print "What is the third length of the triangle?"
u = int(raw_input(" The third length of the triangle is "))
v = r + s + u
print v
答案 1 :(得分：0)
更改行
m = raw_input("I want to find the "
到
m = raw_input("I want to find the ")
看来错误是由于没有关闭括号引起的。
答案 2 :(得分：0)
只是为了完整和完全过度杀伤：
from math import pi
import sys
# version compatibility shim
if sys.hexversion < 0x3000000:
# Python 2.x
inp = raw_input
else:
# Python 3.x
inp = input
#
# utility functions
#
def type_getter(datatype):
def get_type(prompt):
while True:
try:
return datatype(inp(prompt))
except ValueError:
pass
return get_type
get_float = type_getter(float)
get_int = type_getter(int)
def do_menu(prompt, choices):
print("")
# make the display value 1-based
for i,choice in enumerate(choices, 1):
print("{:>3}: {}".format(i, choice))
# make the return value 0-based
return get_int(prompt + "[1-{}] ".format(len(choices))) - 1
#
# base class
#
class Shape(object):
name = None # subclass will override
fields = [] # these values
def __init__(self, **kwargs):
super(Shape, self).__init__() # <= no longer needed in Python 3
for field in self.fields:
if field in kwargs:
value = kwargs[field]
else:
value = get_float("What is the {}'s {}? ".format(self.name, field))
setattr(self, field, value)
def area(self):
raise NotImplemented
def perimeter(self):
raise NotImplemented
#
# Subclasses
#
class Triangle(Shape):
name = "triangle"
fields = ["width", "height"]
def area(self):
return 0.5 * self.width * self.height
def perimeter(self):
# We will assume the width and height are
# adjacent and opposite sides of a right triangle
adj, opp = self.width, self.height
hyp = (adj*adj + opp*opp)**0.5
return adj + opp + hyp
class Rectangle(Shape):
name = "rectangle"
fields = ["width", "height"]
def area(self):
return self.width * self.height
def perimeter(self):
return 2 * (self.width + self.height)
class Ellipse(Shape):
name = "ellipse"
fields = ["long_axis", "short_axis"]
def area(self):
return pi * self.long_axis * self.short_axis * 0.25
def perimeter(self):
# by Ramanujan's approximation - see
# http://www.mathsisfun.com/geometry/ellipse-perimeter.html
ra = 0.5 * self.long_axis
rb = 0.5 * self.short_axis
return pi * (3 * (ra + rb) - ((3 * ra + rb) * (ra + 3 * rb))**0.5)
known_shapes = [Triangle, Rectangle, Ellipse]
known_actions = ["area", "perimeter"]
def main():
print("Welcome to the shapifier!")
# Which type of shape?
shape_choice = do_menu(
"What shape would you like? ",
[shape.name for shape in known_shapes]
)
# Make a shape of that type!
# (because of the way I wrote Shape.__init__,
# it will automatically prompt for required values)
shape = known_shapes[shape_choice]()
# Which calculation?
action_choice = do_menu(
"What would you like to calculate? ",
known_actions
)
# Perform the calculation
value = getattr(shape, known_actions[action_choice])()
# Display the result
print("\nThe {} of the {} was {}.".format(known_actions[action_choice], shape.name, value))
if __name__=="__main__":
main()