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A python wrapper for FMR

Project description

pyfmr: a python wrapper for FMR



Install pyfmr via pip

pip install pyfmr

Grammar file

Save the following grammar content to file sf.grammar

<flight> = <departure> <arrival> {nf.flight($1, $2)};
[flight] = <arrival> <departure> {nf.flight($2, $1)};

<departure> = <from> <city> {nf.I($2)};

<arrival> = <to> <city> {nf.I($2)};
[arrival] = <arrival> {nf.arrival($1)};

<from> = "从" ;

<to> = "到" | "去" | "飞";

<city> = "北京"       {nf.I($@)}
       | "天津"       {nf.I($@)}
       | "上海"       {nf.I($@)}
       | "重庆"       {nf.I($@)}
       | `.(?:城|都)` {nf.I($@)}

<city_ext> = <city>            {nf.I($1)}
           | (any{1,1}) <city> {nf.I($2)}

<cities> = "直辖市:" (list<city_ext>) {nf.I($@)};

Python example codes

import pyfmr

p = pyfmr.Parser("./sf.grammar")
strs = [
for l in strs:
    ret = p.extract(l, "cities")
    for item in ret:

How to build

The cross compiling is done by xgo.


  • Docker
  • Golang


# 1. clone the git repo
git clone && cd pyfmr

# 2. pull xgo docker image
docker pull karalabe/xgo-latest

# 3. install xgo
go get

# 4. build shared libraries
xgo --targets=*/amd64 -buildmode=c-shared -out pyfmr/lib/fmr

# 5. build wheel
python3 sdist bdist_wheel

# 6. upload to
python3 -m twine upload dist/*

Project details

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