What happens in the case of a following for loop in python? How will the values of i change in each iteration. Does the sequences x and y combine to form a single sequence?
for i in x, y:
do_something(i)
The code on which I'm trying is like this:
for sentence in snippet, phrase:
result = sentence[:]
snippet and phrases are parameters whose values will be replaced by list, i.e., snippet and phrase both will be lists.
UPDATE: Okay, turns out you're asking about something entirely different.
The code you have will not combine snippet and phrase. On the first iteration of the loop, a copy of snippet will be assigned to result. On the second iteration, a copy of phrase will be assigned to result, replacing the old value. If you want to create a list with the elements of both snippet and phrase, you can just use
result = snippet + phrase
or if you really want to use a loop,
result = []
for sentence in snippet, phrase:
result += sentence
x, y is a tuple. In other words, it's parsed like this:
for i in (x, y):
do_something(i)
That means do_something will be called once on x, and once on y.
If you want to iterate over pairs of corresponding elements from x and y, use zip:
for i in zip(x, y):
# or
# for x_element, y_element in zip(x, y):
do_something(i):
If you want to iterate over the elements of x, then the elements of y, you can use
import itertools
for i in itertools.chain(x, y):
do_something(i)
or if x and y are both lists or both tuples,
for i in x + y:
do_something(i)
