Description:
flython
Run Python code in Dart/Flutter and be happy forever and ever.
Getting started #
Calling Flython.initialize() causes the main Python app to be created, if it doesn't exist already.
Just follow the pattern of existing commands and create new ones.
Here is an example that shows how to subclass Flython and use OpenCV in Python to convert a colored image to grayscale:
import 'package:flython/flython.dart';
class OpenCV extends Flython {
static const cmdToGray = 1;
Future<dynamic> toGray(String inputFile,
String outputFile,) async {
var command = {
"cmd": cmdToGray,
"input": inputFile,
"output": outputFile,
};
return await runCommand(command);
}
}
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You'll need to modify your main.py file to look like this:
import argparse
import json
import sys
import cv2
CMD_SYS_VERSION = 0
CMD_TO_GRAY = 1
def run(command):
if command["cmd"] == CMD_SYS_VERSION:
return {
"sys.version": sys.version,
}
if command["cmd"] == CMD_TO_GRAY:
image = cv2.imread(command["input"])
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
cv2.imwrite(command["output"], gray)
return {}
else:
return {"error": "Unknown command."}
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--uuid")
args = parser.parse_args()
stream_start = f"`S`T`R`E`A`M`{args.uuid}`S`T`A`R`T`"
stream_end = f"`S`T`R`E`A`M`{args.uuid}`E`N`D`"
while True:
cmd = input()
cmd = json.loads(cmd)
try:
result = run(cmd)
except Exception as e:
result = {"exception": e.__str__()}
result = json.dumps(result)
print(stream_start + result + stream_end)
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An example project #
Here is a very simple example project that uses Flython:
https://github.com/amahta/clipboard_ocr
License
For personal and professional use. You cannot resell or redistribute these repositories in their original state.
Files:
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