This is a python library providing the function zchop, which replaces numbers that are close to zero with zero.

• zchop traverses structures such as lists and numpy arrays, returning a copy that is the same as the input except that small numbers are set to zero.
• zchop_mut is a mutating version of zchop that mutates lists and numpy arrays.

• The parts of complex numbers are treated separately.
• Non-numbers are passed unchanged.

This package is based on the Julia package ZChop.jl, which is in turn based on the Mathematica function Chop.