Hi to everyone , i have a challenge right now in python that for now needs a bit of help in one part of the c0de.
The task is create a new file with the name of the file defined by the ASCII content between the 3 byte and the 16 byte that is parsed from the binary file, the file is over 20 Mb i need to create a file for each record ( each record contains the len of 820 ), so right now i know how to read it and do something with it, like :
Code:
Code:
#!/usr/bin/python
with open("file", "rb") as f:
byte = f.read()
if byte > 820:
print "Reach the 1 record mark on the File you have defined "
Now the problem is , how do i get the name file that i want that is the string between the 2 byte and the 16 byte and how to save every 820 bytes to a new file like :
Code:
#attention noob code coming for quick understading i have a for loop for #example not for use i have to use it for the each 820 bytes new file
#with the read of the 820 bytes on the new file and save it and go for the
#next 820 bytes and so on until the end of the file.
for f.read(820) in file:
if f.read() = 820:
a = f.read()
b = open("Iam_from_2_to_16_byte_string", w)
b.write(a)
b.close
---------- Post updated 30-11-12 at 10:26 AM ---------- Previous update was 29-11-12 at 10:42 AM ----------
here is the solution :
Code:
n = 820
with open('/home/drdos/work/file.PDA', "rb") as f:
while True:
data = f.read(n)
if not data:
break
filename = str(data[16:32])
x = open(filename, 'wb').write(data)
#!/bin/bash
i=0
cat 1.csv | while read fileline
do
echo "$fileline"
IFS="#" flds=( $fileline )
nrofflds=${#flds}
echo "noof fields$nrofflds"
fld=0
while
do
echo "noof counter$fld"
echo "$nrofflds"
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D#A#B#C
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T = Tail
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#!/usr/bin/python26
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In the below files, we are interested in
File 1:
38 107 C 3 T 6 C/T
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Please your help with this.
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You answer would be very... (15 Replies)
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I am not a C programmer. The only C exposure I have is reading and completing the exercises from the C (ANSI C ) Programming Language book:o
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more data.txt
user1:psw1:Moni,Admi
user2:psw2:Depl,Moni,Admi
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Discussion started by: mohtashims
4 Replies
LEARN ABOUT LINUX
dh_python
DH_PYTHON(1) Debhelper DH_PYTHON(1)NAME
dh_python - calculates Python dependencies and adds postinst and prerm Python scripts (deprecated)
SYNOPSIS
dh_python [debhelperoptions] [-n] [-V version] [moduledirs...]
DESCRIPTION
Note: This program is deprecated. You should use dh_pysupport or dh_pycentral instead. This program will do nothing if debian/pycompat or a
Python-Version control file field exists.
dh_python is a debhelper program that is responsible for generating the ${python:Depends} substitutions and adding them to substvars files.
It will also add a postinst and a prerm script if required.
The program will look at Python scripts and modules in your package, and will use this information to generate a dependency on python, with
the current major version, or on pythonX.Y if your scripts or modules need a specific python version. The dependency will be substituted
into your package's control file wherever you place the token ${python:Depends}.
If some modules need to be byte-compiled at install time, appropriate postinst and prerm scripts will be generated. If already byte-
compiled modules are found, they are removed.
If you use this program, your package should build-depend on python.
OPTIONS
module dirs
If your package installs Python modules in non-standard directories, you can make dh_python check those directories by passing their
names on the command line. By default, it will check /usr/lib/site-python, /usr/lib/$PACKAGE, /usr/share/$PACKAGE,
/usr/lib/games/$PACKAGE, /usr/share/games/$PACKAGE and /usr/lib/python?.?/site-packages.
Note: only /usr/lib/site-python, /usr/lib/python?.?/site-packages and the extra names on the command line are searched for binary (.so)
modules.
-V version
If the .py files your package ships are meant to be used by a specific pythonX.Y version, you can use this option to specify the
desired version, such as 2.3. Do not use if you ship modules in /usr/lib/site-python.
-n, --noscripts
Do not modify postinst/prerm scripts.
CONFORMS TO
Debian policy, version 3.5.7
Python policy, version 0.3.7
SEE ALSO debhelper(7)
This program is a part of debhelper.
AUTHOR
Josselin Mouette <joss@debian.org>
most ideas stolen from Brendan O'Dea <bod@debian.org>
8.9.0ubuntu2.1 2012-06-12 DH_PYTHON(1)
11-30-2012
[SOLVED] Python Binary File Read and Parse
, i have a challenge right now in python that for now needs a bit of help in one part of the c0de.