When working with MRC files, there are many libraries that you can work with. Some are faster than this one, some are slower than this one. This library was not built out of speed, or to be novel. It was simply built, because I wanted a library that was easy to interpret, easy to modify, and allowed for fast MRC file modifications.
test_mrc = "test/EMD-3001.map"
m = MRC()
m.read_mrc(test_mrc)
print(m.header_as_string())