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我正在尝试制作一个简单的小工具来将英寸转换为厘米，并且一直在尝试接受用户输入（“y”或“n”）来决定是否进行另一次转换或终止。这是我所做的：

import time

def intro():
    print "Welcome! This program will convert inches to centimeters for you.\n"
    convert()

def convert():
    input_cm = input(("Inches: "))
    inches_conv = input_cm * 2.54
    print "Centimeters: %f\n" % inches_conv
    time.sleep(3)
    restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
    if restart == 'y':
        convert()
    elif restart == 'n':
        end_fast()
    else:
        print "I didn't quite understand that answer. Terminating."
        end_slow()

def end_fast():
    print "This program will close in 5 seconds."
    time.sleep(5)

def end_slow():
    print "This program will close in 30 seconds."
    time.sleep(30)

intro()

这导致：

Traceback（最近一次调用最后一次）：文件“C:\Users\Sam\Programming\Python\the hard way\ex5.4.py”，第 29 行，intro() 文件“C:\Users\Sam\Programming\ Python\the hard way\ex5.4.py"，第 5 行，intro convert() 文件 "C:\Users\Sam\Programming\Python\the hard way\ex5.4.py"，第 12 行，convert restart = str(input("Do you want to make another conversion? [y]Yes or [n]no?\n")) File "", line 1, in NameError: name 'y' is not defined

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4

1 回答 1

6

而不是input尝试raw_input：

代替：

restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))

上：

restart = raw_input("Do you wish to make another conversion? [y]Yes or [n]no: ")
于 2013-08-18T11:55:04.560 回答