This community-built FAQ covers the “Custom Print” exercise in Codecademy’s lessons on Python.
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4 posts were split to a new topic: Why Do These
prints Not Work?
the parameter was never used. the solution relied on using the global variable “board”
board = 
for i in range(5):
board.append(["O"] * 5)
for row in board:
In the for loop, how does the computer just know what “row” is when it’s not like “board[row]” to select something within the “board” list
python can give use the values from the list directly, which is what is happening here. So, we could loop over the list and request the indexes and then use these indexes to get the values from the list, but why would we if python can do that for us?
This is my question also … how does python just know what “row” is. I don’t understand the guest moderator answer. Is row a function in Python that I forgot we learned earlier? When we appended to the list Board, it didn’t seem to me that python was organizing the data into rows at all, hence the output that was NOT in a 5x5 grid the first time we printed it.
row is nothing special. Its just a variable. But given we defined/named this variable in a loop, python will now assign each element of the list to this variable