python每次处理一个字符的三种方法

python每次处理一个字符的三种方法

 

a_string = "abccdea"



print 'the first'

for c in a_string:

    print ord(c)+1



    

print "the second"    

result = [ord(c)+1 for c in a_string]

print result



print "the thrid"



def do_something(c):

    return ord(c)+1



result = map(do_something ,a_string)

print result

打印出的结果：

the first

98

99

100

100

101

102

98

the second

[98, 99, 100, 100, 101, 102, 98]

the thrid

[98, 99, 100, 100, 101, 102, 98]