NameError :未定义NameError名称“[输入]”

Question

我试图制作一个简单的小工具，将英寸转换为厘米，并试图使用用户输入('y‘或'n')来决定是进行另一次转换还是终止。以下是我所做的：

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：

回溯(最近一次调用)：文件“C：\Users\Sam\Programming\Python\ hard way\ex5.4.py"，第29行，intro() File "C:\Users\Sam\Programming\Python\the hard way\ex5.4.py"，第5行，在intro () File”C：\Users\Sam\Programming\the hard way\ex5.4.py“中，第12行，在转换重新启动=str(输入(”您希望进行另一次转换吗？yYes或nno？\n)文件""，第1行，在NameError中:未定义名称'y‘

帮助感激。

Answer 1

而不是input，尝试raw_input

取代：

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

在以下位置：

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