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I've knocking my head against a wall with this:
Basically what I want is to remove " " items from this list of tuples:
[('650', '724', '6354', '', '', ''), ('', '', '', '650', '723', '4539')]
and obtain the following new list:
[('650', '724', '6354'), ('650', '723', '4539')]
any ideas?
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Note: You cannot remove items in a tuple.
In Python, we can't delete an item from a tuple. Instead, we have to assign it to a new Tuple. In this example, we used tuple slicing and concatenation to remove the tuple item. The first one, numTuple[:3] + numTuple[4:] removes the third tuple item.
In Python, since tuple is immutable, you cannot update it, i.e., you cannot add, change, or remove items (elements) in tuple .
How to Remove an Element from a List Using the remove() Method in Python. To remove an element from a list using the remove() method, specify the value of that element and pass it as an argument to the method. remove() will search the list to find it and remove it.
Tuples in Python are immutable. This means that once you have created a tuple, you can't change the elements contained within it. However, you can create a new tuple that doesn't contain the items you don't want. For example:
>>> a = [('650', '724', '6354', '', '', ''), ('', '', '', '650', '723', '4539')]
>>> [tuple(y for y in x if y) for x in a]
[('650', '724', '6354'), ('650', '723', '4539')]
This uses a list comprehension [... for x in a] to create a new list using the formula in .... That uses a generator expression y for y in x if y to create a new tuple containing the elements of x only if y is true (meaning the value is truthy, or the string is nonblank).
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