how to remove all zeros from a list in python code example

Example 1: remove all occurrences of a character in a list python

>>> x = [1,2,3,2,2,2,3,4]
>>> list(filter(lambda a: a != 2, x))
[1, 3, 3, 4]

Example 2: how to remove all zeros from a list in python

X = [0,5,0,0,3,1,15,0,12]
X = [i for i in X if i != 0]

Example 3: remove all of same value python list

x = [1, 2, 3, 2, 2, 2, 3, 4]
list(filter(lambda a: a != 2, x))

Example 4: remove trailing zeros python

var = round(var, 1) #the first value is the number or var 
#to round, the second is what desimal to round to