so here is my code:
def is_valid_move(board, column):
'''Returns True if and only if there is an open cell in column'''
for i in board[col]:
if i == 1 or i == 2:
return False
else:
return True
and then I'm trying to test my function using:
print(is_valid_move(board = [[2, 2, 0, 2, 2, 2, 2], [1, 2, 2, 2, 2, 2, 2], [1, 1, 2, 2, 1, 2, 1], [1, 1, 2, 2, 1, 2, 1], [1, 1, 2, 2, 1, 2, 1], [1, 1, 2, 2, 1, 2, 1]], 2))
I've never gotten this error before so i'm a bit confused on how to actually fix this, or what this even means.
There are two types of arguments: positional and keyword.
If we have the function:
def f(a, b):
return a + b
Then we can call it with positional arguments:
f(4, 4)
# 8
Or keyword arguments:
f(a=4, b=4)
# 8
But not both in the order keyword --> positional, which is what you're doing:
f(a=4, 4)
# SyntaxError: positional argument follows keyword argument
f(4, b=4)
# 8
There's a reason why this is so. Again, imagine we have a similar function:
def f(a, b, *args):
return a + b + sum(args)
How would we know when calling this function what argument is a
, what argument is b
, and what is for args
?
Keyword argument should follow non-keyword arguments in function invocation. In your case, you should assign board to a variable and pass this variable to function.
board = [[2, 2, 0, 2, 2, 2, 2], [1, 2, 2, 2, 2, 2, 2], [1, 1, 2, 2, 1, 2, 1], [1, 1, 2, 2, 1, 2, 1], [1, 1, 2, 2, 1, 2, 1], [1, 1, 2, 2, 1, 2, 1]]
print(is_valid_move(board, 2))
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