Update app.py

app.py

@@ -23,14 +23,19 @@ import subprocess
 import sys
 
 print("CURRENT WORKING DIRECTORY:",os.getcwd())
-os.system('wget https://indic-asr-public.objectstore.e2enetworks.net/ai4b_nemo.zip')
-os.system('unzip -q ai4b_nemo.zip')
-os.chdir('NeMo')
-subprocess.run([sys.executable, '-m', 'pip', 'install', '-e', '.'])
-os.system('bash reinstall.sh')
-os.chdir('..')
-
-os.execv(sys.executable, ['python'] + sys.argv)
+setup_flag = 'setup_complete.flag'
+if not os.path.exists(setup_flag):
+    os.system('wget https://indic-asr-public.objectstore.e2enetworks.net/ai4b_nemo.zip')
+    os.system('unzip -q ai4b_nemo.zip')
+    os.chdir('NeMo')
+    subprocess.run([sys.executable, '-m', 'pip', 'install', '-e', '.'])
+    os.system('bash reinstall.sh')
+    os.chdir('..')
+
+    with open(setup_flag, 'w') as f:
+        f.write('Setup complete')
+
+    os.execv(sys.executable, ['python'] + sys.argv)
 
 # Commented out IPython magic to ensure Python compatibility.
 # %%capture