今天遇到一点小问题，需要编写一个程序将List 中的无规则英文名按【首字母大写其余部分小写】的方式转换

一开始的思路是编写一个函数将每个名字字符串【str】进行处理，如何用map进行批处理

不得不说，大方向的思路是正确的，但在细节的处理上出了些问题

最开始我是这样写名字处理函数的：[python] view plain copy

def change (name)

result = name[0].upper()

for a in name[1:len(name)]:

result = result + a.lower()

然后运行会报错[python] view plain copy

E:\PythonFile>python practice.py

File "practice.py", line 6

for a in name(1:len(name)-1) :

^

SyntaxError: invalid syntax

E:\PythonFile>python practice.py

Traceback (most recent call last):

File "practice.py", line 11, in

name_li = map (change, name_list)

File "practice.py", line 6, in change

for a in name(1,len(name)-1) :

TypeError: 'str' object is not callable

E:\PythonFile>python practice.py

Traceback (most recent call last):

File "practice.py", line 9, in

name_li = map (change, name_list)

File "practice.py", line 5, in change

name[0] = name[0].upper()

TypeError: 'str' object does not support item assignment

E:\PythonFile>python practice.py

Traceback (most recent call last):

File "practice.py", line 10, in

name_li = map (change, name_list)

File "practice.py", line 6, in change

name[0] = tmp

TypeError: 'str' object does not support item assignment

E:\PythonFile>python

Python 2.7.9 (default, Dec 10 2014, 12:24:55) [MSC v.1500 32 bit (Intel)] on win

32

Type "help", "copyright", "credits" or "license" for more information.

>>> l = 'zxcv'

>>> print l[0]

z

>>> print l[0].upper

>>> print l[0].upper()

Z

>>> z

Traceback (most recent call last):

File "", line 1, in

NameError: name 'z' is not defined

>>> ^Z

E:\PythonFile>python practice.py

Traceback (most recent call last):

File "practice.py", line 9, in

name_li = map (change, name_list)

File "practice.py", line 6, in change

name[0] = tmp

TypeError: 'str' object does not support item assignment

E:\PythonFile>python practice.py

Traceback (most recent call last):

File "practice.py", line 13, in

name_li = map (change, name_list)

File "practice.py", line 5, in change

tmp = chr(name[0])

TypeError: an integer is required

试过几次后发现大致意思是对字符串的处理不能这么做，于是查了upper（）和lower()的用法，发现这两个函数就是直接作用于str的，所以根本不需要这么麻烦。

修改后：[python] view plain copy

# practice.py

# Change the first char in every name from lower type to upper type

def change (name):

result = name[0:1].upper()+name[1:len(name)].lower()

return result

name_list = ['kzd','ysy','kcw','scr','ky']

name_li = map (change, name_list)

print name_l

运行结果：[python] view plain copy

E:\PythonFile>python practice.py

['Kzd', 'Ysy', 'Kcw', 'Scr', 'Ky']

错误在于我企图对字符串中的元素进行赋值替换，这是不允许的。

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