On 20/02/17 17:55, Ganesh Pal wrote:
1. The only difference between both the programs the difference are just
the below lines.
newdata = '64000101057804'.decode('hex')
and
newdata = ""
newdata = '64000101057804'
newdata.decode('hex')
What is happening here and how do I fix this in program 2 ? for my eyes
there doesn't look any difference .
Python strings are immutable; methods like decode() create a brand new
string for you. What your program 2 version does is to name the string
of hex digits "newdata", decode it as hex into a new string and then
throw that new string away. Your program 1 version by contrast decodes
the string of digits as hex and then names is "newdata", throwing the
original string of digits away.
question 2:
I am using the variable newdata because I can't hardcore the value , I
have to keep changing this every time the function is called, will return
it as a string help me slove this problem
def get_data() :
return str(data)
new_data =get_data(input)
That seems like a lot of work and syntax errors to do
new_data = raw_input()
(or new_data = input() if you're writing Python 3, which you weren't)
Since you probably want to do this for your file name too, you might
want to pass them as command line parameters to the script. Look up
sys.argv[] in the standard library, or the argparse module if you're
feeling keen.
--
Rhodri James *-* Kynesim Ltd
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