from random import randrange
lstSeed=['a','b','c','d','e']
results=[]
while lstSeed:
pos = randrange( len(lstSeed) )
results.append(lstSeed[pos])
del lstSeed[pos]
print lstSeed

return results

—
#!/usr/bin/env python

import random,sys

length = int(sys.argv[1])

print “”.join([random.choice('ACGT') for x in range(lenght)])
—

look at this I just got a new snake subspecie! arrrghh…

In fact it is not necessary to convert from string to list. I just used the conversion to show that random.choice() can use either. Sometimes your elements will be in a string, sometimes in a list.

Paulo

Thanks for the introduction of ‘random’ module, that I’m not familiar with.

But I have a question about ‘random.choice()’ function. Is not the random.choice() equivalent with random.choice()? So is it necessary for converting string to list in the above code?

Thanks!
Dilmurat