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fix: Add Windows Unicode compatibility for console output (#8710)

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* 🔧 (langflow/__main__.py): Initialize console with Windows-safe settings to handle Unicode encoding issues and disable emoji processing for Windows systems
🔧 (langflow/__main__.py): Add fallback mechanisms for Windows systems with encoding issues to display banners without emojis and Rich formatting

* 🔧 (langflow/__main__.py): refactor console initialization to use a more concise and readable ternary expression
📝 (langflow/__main__.py): update print_banner function to log messages using logger instead of print for better consistency and maintainability

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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Cristhian Zanforlin Lousa 2025-06-24 14:01:24 -03:00 • committed by GitHub
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1 changed files with 35 additions and 4 deletions
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39
src/backend/base/langflow/__main__.py
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@ -36,7 +36,8 @@ from langflow.services.utils import initialize_services
from langflow.utils.version import fetch_latest_version, get_version_info from langflow.utils.version import fetch_latest_version, get_version_info
from langflow.utils.version import is_pre_release as langflow_is_pre_release from langflow.utils.version import is_pre_release as langflow_is_pre_release
console = Console() # Initialize console with Windows-safe settings
console = Console(legacy_windows=True, emoji=False) if platform.system() == "Windows" else Console()
app = typer.Typer(no_args_is_help=True) app = typer.Typer(no_args_is_help=True)
@ -600,7 +601,26 @@ def print_banner(host: str, port: int, protocol: str) -> None:
message = f"{title}\n{info_text}\n\n{telemetry_text}\n\n{access_link}" message = f"{title}\n{info_text}\n\n{telemetry_text}\n\n{access_link}"
console.print(Panel.fit(message, border_style="#7528FC", padding=(1, 2))) # Handle Unicode encoding errors on Windows
try:
console.print(Panel.fit(message, border_style="#7528FC", padding=(1, 2)))
except UnicodeEncodeError:
# Fallback to a simpler banner without emojis for Windows systems with encoding issues
fallback_message = (
f"Welcome to {package_name}\n\n"
"* GitHub: https://github.com/langflow-ai/langflow\n"
"# Discord: https://discord.com/invite/EqksyE2EX9\n\n"
f"{telemetry_text}\n\n"
f"[OK] Open Langflow -> {protocol}://{access_host}:{port}"
)
try:
console.print(Panel.fit(fallback_message, border_style="#7528FC", padding=(1, 2)))
except UnicodeEncodeError:
# Last resort: use logger instead of print
logger.info(f"Welcome to {package_name}")
logger.info("GitHub: https://github.com/langflow-ai/langflow")
logger.info("Discord: https://discord.com/invite/EqksyE2EX9")
logger.info(f"Open Langflow: {protocol}://{access_host}:{port}")
@app.command() @app.command()
@ -793,8 +813,19 @@ def api_key_banner(unmasked_api_key) -> None:
border_style="blue", border_style="blue",
expand=False, expand=False,
) )
console = Console() # Use Windows-safe console initialization
console.print(panel) banner_console = Console(legacy_windows=True, emoji=False) if platform.system() == "Windows" else Console()
try:
banner_console.print(panel)
except UnicodeEncodeError:
# Fallback for Windows encoding issues
logger.info("API Key Created Successfully:")
logger.info(unmasked_api_key.api_key)
logger.info("This is the only time the API key will be displayed.")
logger.info("Make sure to store it in a secure location.")
ctrl_cmd = "Ctrl" if not is_mac else "Cmd"
logger.info(f"The API key has been copied to your clipboard. {ctrl_cmd} + V to paste it.")
def main() -> None: def main() -> None: