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]