Giovanni Bajo wrote: > [EMAIL PROTECTED] wrote: > > >> I need to remove zeros from > >> the begining of list, but I can't :-(. > > > > I believe the following is almost a direct translation of the above > > sentence. > > > > import itertools as it > > a=[0,0,0,1,0] > > a[:]=it.dropwhile(lambda x: x is 0, a) > > > Usa lambda x: x==0 or simply lambda x: x > > Using 'is' relies on the interpreter reusing existing instances of the > immutable object '0', which is an implementation detail.
stand corrected. But I don't think "lambda x: x" is I want as 0 would be false which would stop the dropwhile right away. For this particular case one can even use operator.not_ directly, which skip the lambda(has some peformance advantage). -- http://mail.python.org/mailman/listinfo/python-list
