确定列表列表中的所有值是真还是假

Question

So basically I have a function that creates a list of lists, lets say I define 3 values to be in my list and each of those 3 values has a list of their own that contains 2 values, their number, and their availability, like so:

[['Product 0', False, ], ['Product 1', False, ], ['Product 2', False,]]

Basically, I want to determine whether all values for availability are True or False , and I cannot seem to get it to work with all() as it apparently does not have to capability to check for values of lists inside of a list.

Answer 1

You can use list comprehension for this. Iterate the inner lists and extract the second value (True\\False). Then use all to check all the values.

x = [['Product 0', False, ], ['Product 1', False, ], ['Product 2', False,]]

AllTrue  = all([e[1] for e in x])      # False
AllFalse = all([not e[1] for e in x])  # True