• 主要介绍了python读写二进制文件的方法,实例分析了Python读写二进制文件的相关技巧,需要的朋友可以参考下
本文实例讲述了python读写二进制文件的方法。分享给大家供大家参考。具体如下：
>>> from struct import *
>>> file = open(r"c:/debug.txt", "wb")
>>> file.write(pack("idh", 12345, 67.89, 15))
>>> file.close()
接着再将其读进来
>>> file = open(r"c:/debug.txt", "rb")
>>> a,b,c
(12345, 67.890000000000001, 15)
>>> print a,b,c
12345 67.89 15
>>> file.close()
在操作过程中需要注意数据的size
注意 wb,rb中的b字，一定不可以少
方法1：
myfile=open('c:\\t','rb')
byte=ord(s) #将一个字节 读成一个数
print hex(byte) #转换成16进制的字符串
方法2
import struct
print struct.unpack('c',myfile)
print struct.unpack('b',myfile)
写入
To open a file for binary writing is easy, it is the same way you do for reading, just change the mode into “wb”.
file = open("test.bin","wb")
But, how to write the binary byte into the file?You may write it straight away with hex code like this:
file.write("\x5F\x9D\x3E") file.close()
Now, check it out with hexedit,
hexedit test.bin
You will see this:
00000000 5F 9D 3E _.> 00000020 00000040
Now, open the file to append more bytes:
file = open("test.bin","ab")
What if I want to store by bin value into a stream and write it one short?s ="\x45\xF3" s = s + "%c%c" % (0x45,0xF3) file.write(s) file.close()
Any convenient ways if I can obtained a hex string, and want to convert it back to binary format?Yes, you just need to import binascii
import binascii hs="5B7F888489FEDA" hb=binascii.a2b_hex(hs) file.write(hb) file.close()
希望本文所述对大家的Python程序设计有所帮助。
展开全文
本文实例讲述了python读写二进制文件的方法。分享给大家供大家参考。具体如下：
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>>>from structimport *
>>>file = open(r"c:/debug.txt","wb")
>>>file.write(pack("idh",12345,67.89,15))
>>>file.close()
接着再将其读进来
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1
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>>>file = open(r"c:/debug.txt","rb")
>>> a,b,c
(12345,67.890000000000001,15)
>>>print a,b,c
12345 67.89 15
>>>file.close()
在操作过程中需要注意数据的size
注意 wb,rb中的b字，一定不可以少
方法1：
?
1
2
3
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myfile=open('c:\\t','rb')
byte=ord(s)#将一个字节 读成一个数
print hex(byte)#转换成16进制的字符串
方法2
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1
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3
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import struct
print struct.unpack('c',myfile)
print struct.unpack('b',myfile)
写入
To open a file for binary writing is easy, it is the same way you do for reading, just change the mode into “wb”.
file = open("test.bin","wb")
But, how to write the binary byte into the file?
You may write it straight away with hex code like this:
file.write("\x5F\x9D\x3E") file.close()
Now, check it out with hexedit,
hexedit test.bin
You will see this:
00000000 5F 9D 3E _.> 00000020 00000040
Now, open the file to append more bytes:
file = open("test.bin","ab")
What if I want to store by bin value into a stream and write it one short?
s ="\x45\xF3" s = s + "%c%c" % (0x45,0xF3) file.write(s) file.close()
Any convenient ways if I can obtained a hex string, and want to convert it back to binary format?
Yes, you just need to import binascii
import binascii hs="5B7F888489FEDA" hb=binascii.a2b_hex(hs) file.write(hb) file.close()
希望本文所述对大家的Python程序设计有所帮助。
展开全文
本文实例讲述了python读写二进制文件的方法。分享给大家供大家参考。具体如下：
>>> from struct import *
>>> file = open(r"c:/debug.txt", "wb")
>>> file.write(pack("idh", 12345, 67.89, 15))
>>> file.close()
接着再将其读进来
>>> file = open(r"c:/debug.txt", "rb")
>>> a,b,c
(12345, 67.890000000000001, 15)
>>> print a,b,c
12345 67.89 15
>>> file.close()
在操作过程中需要注意数据的size
注意 wb,rb中的b字，一定不可以少
方法1：
myfile=open('c:\\t','rb')
byte=ord(s) #将一个字节 读成一个数
print hex(byte) #转换成16进制的字符串
方法2
import struct
print struct.unpack('c',myfile)
print struct.unpack('b',myfile)
写入
To open a file for binary writing is easy, it is the same way you do for reading, just change the mode into “wb”.
file = open("test.bin","wb")
But, how to write the binary byte into the file?You may write it straight away with hex code like this:
file.write("\x5F\x9D\x3E") file.close()
Now, check it out with hexedit,
hexedit test.bin
You will see this:
00000000 5F 9D 3E _.> 00000020 00000040
Now, open the file to append more bytes:
file = open("test.bin","ab")
What if I want to store by bin value into a stream and write it one short?s ="\x45\xF3" s = s + "%c%c" % (0x45,0xF3) file.write(s) file.close()
Any convenient ways if I can obtained a hex string, and want to convert it back to binary format?Yes, you just need to import binascii
import binascii hs="5B7F888489FEDA" hb=binascii.a2b_hex(hs) file.write(hb) file.close()
希望本文所述对大家的Python程序设计有所帮助。
展开全文
本文实例讲述了python读写二进制文件的方法。分享给大家供大家参考。具体如下：
>>> from struct import *
>>> file = open(r"c:/debug.txt", "wb")
>>> file.write(pack("idh", 12345, 67.89, 15))
>>> file.close()
接着再将其读进来
>>> file = open(r"c:/debug.txt", "rb")
>>> a,b,c
(12345, 67.890000000000001, 15)
>>> print a,b,c
12345 67.89 15
>>> file.close()
在操作过程中需要注意数据的size
注意 wb,rb中的b字，一定不可以少
方法1：
myfile=open('c:\\t','rb')
byte=ord(s) #将一个字节 读成一个数
print hex(byte) #转换成16进制的字符串
方法2
import struct
print struct.unpack('c',myfile)
print struct.unpack('b',myfile)
写入
To open a file for binary writing is easy, it is the same way you do for reading, just change the mode into “wb”.
file = open("test.bin","wb")
But, how to write the binary byte into the file?You may write it straight away with hex code like this:
file.write("\x5F\x9D\x3E") file.close()
Now, check it out with hexedit,
hexedit test.bin
You will see this:
00000000 5F 9D 3E _.> 00000020 00000040
Now, open the file to append more bytes:
file = open("test.bin","ab")
What if I want to store by bin value into a stream and write it one short?s ="\x45\xF3" s = s + "%c%c" % (0x45,0xF3) file.write(s) file.close()
Any convenient ways if I can obtained a hex string, and want to convert it back to binary format?Yes, you just need to import binascii
import binascii hs="5B7F888489FEDA" hb=binascii.a2b_hex(hs) file.write(hb) file.close()
希望本文所述对大家的Python程序设计有所帮助。
本文标题: python读写二进制文件的方法
本文地址: http://www.cppcns.com/jiaoben/python/124447.html
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