ReadingFromABinaryFile
Revision as of 20:32, 23 September 2010 by Migratebot (talk | contribs) (Created page with "= Reading from a binary file =
== Opening, Reading ==
Simple example of parsing a binary file (reads 1024 bytes, aka 1MB at a time).
<source lang="python"> import os, sy...")
Reading from a binary file
Opening, Reading
Simple example of parsing a binary file (reads 1024 bytes, aka 1MB at a time).
import os, sys
fpath = sys.argv[1]
size = os.stat(fpath)[6]
print size, (size / 1024.0)
file = open(fpath, "rb")
count = 0
while 1:
chunk = file.read(1024)
if not chunk:
break
count += 1
print ".",
print
file.close()
print count, "megabytes"
Parsing
The Python struct module is very useful for turning the "raw data" returned from read into Python data types (strings, numbers).