问候方案 [英] Greeting program

问题描述

我一直在学习如何使用PythonPython绝对初学者指南来编程Python。我遇到的问题是，当使用 eclipse-pydev 时，不允许我使用如果语句。这是我写的代码...

I have been learning how to program in Python using the book "Python the Absolute Beginners Guide." The problem I am having is that when using eclipse-pydev it won't allow me to use the if statement. Here is the code I have written...

name = input("What is your name? ")
print(name)
print("Hello" name )

结果是

What is your name? caleb
Traceback (most recent call last):
  File "/Users/calebmatthias/Document/workspace/de.vogella.python.first/simpprogram.py", line 6, in <module>
    name = input("What is your name? ")
  File "/Users/calebmatthias/Desktop/eclipse 2/plugins/org.python.pydev_2.2.3.2011100616/PySrc/pydev_sitecustomize/sitecustomize.py", line 210, in input
    return eval(raw_input(prompt))
  File "<string>", line 1, in <module>
NameError: name 'caleb' is not defined

当我执行 if 语句我把

name = input("What is your name? ")
if name == ("Caleb"):
    print(" Hello Bud!")

结果是

  What is your name? Caleb
Traceback (most recent call last):
  File "/Users/calebmatthias/Document/workspace/de.vogella.python.first/simpprogram.py", line 6, in <module>
    name = input("What is your name? ")
  File "/Users/calebmatthias/Desktop/eclipse 2/plugins/org.python.pydev_2.2.3.2011100616/PySrc/pydev_sitecustomize/sitecustomize.py", line 210, in input
    return eval(raw_input(prompt))
  File "<string>", line 1, in <module>
NameError: name 'Caleb' is not defined    

推荐答案

p>使用 raw_input 而不是 输入 。

Use raw_input instead of input.

Python开发人员可能应该重命名这些功能，以便更清晰，初学者不要轻易混淆。

Python developers probably should have renamed those functions so it's more clear and beginners don't get confused so easily.

当您输入 caleb 进入输入的提示，它试图评估 caleb ，它看起来像一个变量。变量 caleb 尚未定义，因此正在引发该异常。

When you type caleb into the prompt with input it's trying to evaluate caleb which looks like a variable. The variable caleb hasn't been defined, so it's raising that exception.

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