Drop rows from data with zero value

[stullis]

Line 12 below will do it for you.

data = [
    ["2018-01-01", 0],
    ["2018-01-02", 1],
    ["2018-01-03", 0],
    ["2018-01-04", 0],
    ["2018-01-05", 0],
    ["2018-01-06", 31],
    ["2018-01-07", 0],
    ["2018-01-08", 0]
]

data2 = [entry for entry in data if entry[1] != 0]
print(data2)