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Improved error messages with AlphaVantage stock API calls.

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This commit is contained in:
Matthew Grotke 2026-01-20 19:40:21 -05:00
parent 08e22632bc
commit 031c5ff8dd
1 changed files with 13 additions and 6 deletions
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19
stocks/get_stocks_alphavantage.py
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@ -18,6 +18,12 @@ API_DELAY_SECONDS = 1
NO_THRASH_SECONDS = 60 * 60 # 1 hour NO_THRASH_SECONDS = 60 * 60 # 1 hour
def log_error(message):
"""Print timestamped error message to stderr and flush immediately."""
ts = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
print(f"[{ts}] {message}", file=sys.stderr, flush=True)
def fetch_intraday_data(api_key, symbol, interval="1min"): def fetch_intraday_data(api_key, symbol, interval="1min"):
# Query AlphaVantage intraday endpoint for the given symbol # Query AlphaVantage intraday endpoint for the given symbol
url = "https://www.alphavantage.co/query" url = "https://www.alphavantage.co/query"
@ -45,13 +51,13 @@ def fetch_intraday_data(api_key, symbol, interval="1min"):
} }
else: else:
# API responded but did not include expected time series data # API responded but did not include expected time series data
print(f"Error: No 'Time Series ({interval})' data found for {symbol}.", file=sys.stderr) log_error(f"No 'Time Series ({interval})' data found for {symbol}.")
else: else:
# HTTP error from AlphaVantage # HTTP error from AlphaVantage
print(f"Error: Failed to fetch intraday data for {symbol} (HTTP {response.status_code})", file=sys.stderr) log_error(f"Failed to fetch intraday data for {symbol} (HTTP {response.status_code})")
except requests.RequestException as e: except requests.RequestException as e:
# Network or request failure # Network or request failure
print(f"Error: Failed to fetch intraday data for {symbol} - {e}", file=sys.stderr) log_error(f"Failed to fetch intraday data for {symbol} - {e}")
return None return None
@ -92,13 +98,14 @@ def fetch_historical_data(api_key, symbol, range_in_days):
} }
else: else:
# API responded but did not include expected daily series data # API responded but did not include expected daily series data
print(f"Error: No 'Time Series (Daily)' data found for {symbol}.", file=sys.stderr) log_error(f"No 'Time Series (Daily)' data found for {symbol}.")
else: else:
# HTTP error from AlphaVantage # HTTP error from AlphaVantage
print(f"Error: Failed to fetch historical data for {symbol} (HTTP {response.status_code})", file=sys.stderr) log_error(f"Failed to fetch historical data for {symbol} (HTTP {response.status_code})")
except requests.RequestException as e: except requests.RequestException as e:
# Network or request failure # Network or request failure
print(f"Error: Failed to fetch historical data for {symbol} - {e}", file=sys.stderr) log_error(f"Failed to fetch historical data for {symbol} - {e}")
return None return None