This repo forked from https://github.com/mxmssh/IDAmetrics, go to check the original README for more information.

What I did is porting IDAMetrics_static.py from IDA 5.5.0 (32 bit) to IDA 7.5.200519 (32 bit).

The implementation of GetInstructionType function was based on string matching which is erroneous and inaccuracy, e.g. the leave instruction would be counted as ASSIGNMENT_INSTRUCTION just because the startswith("lea") of leave is apparently True:

for assign_instr_mnem in assign_instructions_general:
        if instr_mnem.startswith(assign_instr_mnem):
            return inType.ASSIGNMENT_INSTRUCTION

Also, because the string matching need someone manually build a list. There may be omissions from the list. For example, setnz should be included in assign_instructions_general.

assign_instructions_general = [
    "mov", "cmov", "xchg", "bswap", "xadd", "ad", "sub", "sbb", "imul", "mul",
    "idiv", "div", "inc", "dec", "neg", "da", "aa", "and", "or", "xor", "not",
    "sar", "shr", "sal", "shl", "shrd", "shld", "ror", "rol", "rcr", "rcl",
    "lod", "sto", "lea"
]

This kind of information should has been gained by IDA during the analyzing. Using APIs in module ida_idp should solve some problems.