Write Binary File

**valdonas** · 2009-03-31, 07:37

Hello,
how i can write binary data to file:
f=open('c:\\a.bin','wb')
f.write(chr(254))
f.close()

i get error ASCII decoding error

and how find binary data in binary file ?

**croozeus** · 2009-03-31, 09:18

Originally Posted by valdonas

Hello,
how i can write binary data to file:
f=open('c:\\a.bin','wb')
f.write(chr(254))
f.close()

i get error ASCII decoding error

and how find binary data in binary file ?

As it says, it has a problem with decoding 254. Non-printable character?

Works with other simple values,

Try this,

Code:

f=open('c:\\a.bin','wb')
f.write(chr(2)) #write ?
f.close()

Refer to the ASCII character map,
http://www.danshort.com/ASCIImap/

//Croozeus

**jethro.fn** · 2009-03-31, 09:40

Originally Posted by valdonas

Code:

 f=open('c:\\a.bin','wb')
 f.write(chr(254))
 f.close()

Works fine here, using PyS60 1.4.2.

**valdonas** · 2009-03-31, 10:08

and how i can write to file all characters ?

**aya42** · 2009-03-31, 18:20

Originally Posted by valdonas

and how i can write to file all characters ?

You mean a file containing every possible byte value?

Code:

f = open('myfile', 'wb')
f.write(''.join(map(chr, range(256))))
f.close()

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