我在 Mac OSX 10.9.5m 上运行 python 2.7.10，但它不起作用。这是代码：
# YourName.py
name = input("What is your name?\n")
print("Hi, ", name)
这是错误：
Python 2.7.10 (v2.7.10:15c95b7d81dc, May 23 2015, 09:33:12)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART ================================
>>>
What is your name?
Ella
Traceback (most recent call last):
File "/Users/CentCom/Downloads/code/ch01/YourName.py", line 2, in <module>
name = input("What is your name?\n")
File "<string>", line 1, in <module>
NameError: name 'Ella' is not defined
>>>
use raw_input在Python 2.7.1中：
name = raw_input("What is your name?\n")
否则，您必须依赖用户足够了解才能输入带引号的字符串。喜欢"David"，或者输入尝试评估名称（变量/对象/等），如果范围内没有这样的名称，您将收到错误。
或者，使用异常处理：
name = input("What is your name?\n")
try:
print("Hi, ", name)
except NameError, e:
print("Please enclose your input with quotes")
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