问候程序引发NameError

Question

varname = input("what is your name?: ")
print ("Hello", varname)

有人知道为什么这不起作用吗？只需打印

Traceback (most recent call last):
  File "C:/Users/sfawcett/Desktop/python.py", line 1, in <module>
    varname = input("what is your name?: ")
  File "<string>", line 1, in <module>
NameError: name 'Lewis' is not defined

Answer 1

input()评估字符串。要获得原始值，您应该使用raw_input()

Answer 2

在python3中： -

In [4]: varname = input("what is your name?: ")
what is your name?: lewis

In [5]: print ("Hello", varname)
Hello lewis

在python2中： -

阅读here about input

In [185]: varname = raw_input("what is your name?: ") #don't use `input()`
what is your name?: lewis

In [186]: print ("Hello", varname)
('Hello', 'lewis')