some more changes for python version warning; add a commandline flag to disable

launch.py

@@ -18,23 +18,33 @@ skip_install = False
 
 
 def check_python_version():
-    version = sys.version_info
-    if platform.system() == "Windows":
+    is_windows = platform.system() == "Windows"
+    major = sys.version_info.major
+    minor = sys.version_info.minor
+    micro = sys.version_info.micro
+
+    if is_windows:
         supported_minors = [10]
     else:
         supported_minors = [7, 8, 9, 10, 11]
 
-    if not (version.major == 3 and version.minor in supported_minors):
+    if not (major == 3 and minor in supported_minors):
         import modules.errors
 
         modules.errors.print_error_explanation(f"""
-This program is tested with 3.10.6 Python, but you have {version.major}.{version.minor}.{version.micro}.
+INCOMPATIBLE PYTHON VERSION
+
+This program is tested with 3.10.6 Python, but you have {major}.{minor}.{micro}.
 If you encounter an error with "RuntimeError: Couldn't install torch." message,
 or any other error regarding unsuccessful package (library) installation,
 please downgrade (or upgrade) to the latest version of 3.10 Python
 and delete current Python and "venv" folder in WebUI's directory.
 
-You can download 3.10 Python from here: https://www.python.org/downloads/release/python-3109/\
+You can download 3.10 Python from here: https://www.python.org/downloads/release/python-3109/
+
+{"Alternatively, use a binary release of WebUI: https://github.com/AUTOMATIC1111/stable-diffusion-webui/releases" if is_windows else ""}
+
+Use --skip-python-version-check to suppress this warning.
 """)
 
 
@@ -237,6 +247,7 @@ def prepare_environment():
 
     sys.argv, _ = extract_arg(sys.argv, '-f')
     sys.argv, skip_torch_cuda_test = extract_arg(sys.argv, '--skip-torch-cuda-test')
+    sys.argv, skip_python_version_check = extract_arg(sys.argv, '--skip-python-version-check')
     sys.argv, reinstall_xformers = extract_arg(sys.argv, '--reinstall-xformers')
     sys.argv, reinstall_torch = extract_arg(sys.argv, '--reinstall-torch')
     sys.argv, update_check = extract_arg(sys.argv, '--update-check')
@@ -245,6 +256,9 @@ def prepare_environment():
     xformers = '--xformers' in sys.argv
     ngrok = '--ngrok' in sys.argv
 
+    if not skip_python_version_check:
+        check_python_version()
+
     commit = commit_hash()
 
     print(f"Python {sys.version}")
@@ -342,6 +356,5 @@ def start():
 
 
 if __name__ == "__main__":
-    check_python_version()
     prepare_environment()
     start()