Move speech code to separate file

main.py

@@ -1,49 +1,23 @@
 #!/usr/bin/env python3
 
-import json
 import sys
-from urllib.request import Request, urlopen
+import warnings
 
-from scipy.io import wavfile
+from speech import Speech
 
-
-def stt(wav_file: str, url: str) -> str:
-    print(f'Connecting to \'{url}\'...')
-    request = Request(f'{url}/stt', data=_load_wav(wav_file), headers={'Content-Type': 'audio/wav'})
-    result = json.loads(urlopen(request).read().decode('utf-8'))
-
-    if not ('code' in result and 'text' in result):
-        raise RuntimeError(f'Wrong reply from server: {result}')
-    return result.text if not result.code else f'Server error: [{result.text}]: {result.code}'
-
-
-def _load_wav(wav_file):
-    _check_wav(wav_file)
-    with open(wav_file, 'rb') as file:
-        result = file.read()
-    return result
-
-
-def _check_wav(wav_file):
-    sample_rate, sig = wavfile.read(wav_file)
-    channels = len(sig.shape)
-    bits = sig.dtype.base.name
-    if sample_rate != 16000:
-        raise Exception(f'Sample rate is not 16000: {sample_rate}')
-    if channels != 1:
-        raise Exception(f'Number of Channels is not 1 (Not mono): {channels}')
-    if bits != 'int16':
-        raise Exception(f'Bits per sample 16: {bits}')
+if not sys.warnoptions:
+    warnings.simplefilter("ignore")
 
 
 def _main():
     if len(sys.argv) < 2:
-        print('Usage: {} FILE [URL]'.format(sys.argv[0]))
+        print(f'Usage: {sys.argv[0]} FILE')
         exit(1)
-    file = sys.argv[1]
-    server = 'http://127.0.0.1:8086' if len(sys.argv) < 3 else sys.argv[2]
-    print(f'Result: {stt(file, server)}')
+    wav_file = sys.argv[1]
+    speech_server = 'http://vosk.athene.tech'
+    text = Speech().run(wav_file, speech_server)
+    print(f'Text: {text}')
 
 
 if __name__ == '__main__':
-    _main()
+    _main()

speech.py

@@ -0,0 +1,40 @@
+import json
+from urllib.request import Request, urlopen
+
+from scipy.io import wavfile
+
+
+class Speech:
+    @staticmethod
+    def __check_wav(wav_file):
+        sample_rate, sig = wavfile.read(wav_file)
+        channels = len(sig.shape)
+        bits = sig.dtype.base.name
+        if sample_rate != 16000:
+            raise Exception(f'Sample rate is not 16000: {sample_rate}')
+        if channels != 1:
+            raise Exception(f'Number of Channels is not 1 (Not mono): {channels}')
+        if bits != 'int16':
+            raise Exception(f'Bits per sample 16: {bits}')
+
+    @staticmethod
+    def __load_wav(wav_file):
+        Speech.__check_wav(wav_file)
+        with open(wav_file, 'rb') as file:
+            result = file.read()
+        return result
+
+    @staticmethod
+    def __stt(wav_file: str, server: str) -> str:
+        print(f'Connecting to \'{server}\'...')
+        request = Request(url=f'{server}/stt',
+                          data=Speech.__load_wav(wav_file),
+                          headers={'Content-Type': 'audio/wav'})
+        result = json.loads(urlopen(request).read().decode('utf-8'))
+
+        if not ('code' in result and 'text' in result):
+            raise RuntimeError(f'Wrong reply from server: {result}')
+        return result['text'] if not result['code'] else f'Server error: {result}'
+
+    def run(self, wav_file, server):
+        return self.__stt(wav_file, server)