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Python struct.unpack

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Release: 2016-06-16 08:47:38
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1. 设置fomat格式,如下:

复制代码 代码如下:

# 取前5个字符,跳过4个字符华,再取3个字符
format = '5s 4x 3s'

2. 使用struck.unpack获取子字符串
复制代码 代码如下:

import struct
print struct.unpack(format, 'Test astring')
#('Test', 'ing')

来个简单的例子吧,有一个字符串'He is not very happy',处理一下,把中间的not去掉,然后再输出。
复制代码 代码如下:

import struct
theString = 'He is not very happy'
format = '2s 1x 2s 5x 4s 1x 5s'
print ' '.join(struct.unpack(format, theString))

输出结果:
He is very happy
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