How To Fix “Connectionerror: Max retries exceeded with URL” in Python:
To fix the error follow the below steps:
- Import the required libraries(Ex. requests, urllib3, etc.).
- Set up error handling using a block to catch exceptions.
- Within the block, send the HTTP request.
- Optionally, customize request headers using the parameter.
- Implement retry logic using a loop and a delay mechanism.
- Consider using a for connection pooling and efficiency.
- If the error persists, investigate potential server-side problems or network restrictions.
Example 1: Basic Retry Strategy
import requests
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry
# Create a session
session = requests.Session()
# Define a retry strategy
retry_strategy = Retry(
total=5, # Total number of retries
backoff_factor=1, # Waits 1 second between retries, then 2s, 4s, 8s...
status_forcelist=[429, 500, 502, 503, 504], # Status codes to retry on
method_whitelist=["HEAD", "GET", "OPTIONS"] # Methods to retry
)
# Mount the retry strategy to the session
adapter = HTTPAdapter(max_retries=retry_strategy)
session.mount("http://", adapter)
session.mount("https://", adapter)
# Make a request
try:
response = session.get("https://example.com")
response.raise_for_status() # Raise an exception for HTTP errors
print(response.content) # Handle the response
except requests.exceptions.ConnectionError as e:
print(f"Error connecting to the server: {e}")
except requests.exceptions.HTTPError as e:
print(f"HTTP error occurred: {e}")
except requests.exceptions.RequestException as e:
print(f"An error occurred: {e}")
# This code is contributed by Susobhan Akhuli
Output
The log will show detailed information about the success or failure of the request. If there is an error, it will log the specific type of error.
Example 2: Logging and Detailed Error Handling
import requests
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry
import logging
# Configure logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
# Create a session
session = requests.Session()
# Define a retry strategy
retry_strategy = Retry(
total=5,
backoff_factor=1,
status_forcelist=[429, 500, 502, 503, 504],
method_whitelist=["HEAD", "GET", "OPTIONS"]
)
# Mount the retry strategy to the session
adapter = HTTPAdapter(max_retries=retry_strategy)
session.mount("http://", adapter)
session.mount("https://", adapter)
# Make a request
url = "https://example.com"
try:
response = session.get(url)
response.raise_for_status()
logger.info("Request successful.")
logger.info(f"Response: {response.content}")
except requests.exceptions.ConnectionError as e:
logger.error(f"Connection error: {e}")
except requests.exceptions.HTTPError as e:
logger.error(f"HTTP error: {e}")
except requests.exceptions.RequestException as e:
logger.error(f"General error: {e}")
# This code is contributed by Susobhan Akhuli
Output
The log will show detailed information about the success or failure of the request. If there is an error, it will log the specific type of error.
Remember that, the specific implementation might vary based on use case and the libraries we’re working with.
How To Fix “Connectionerror : Max retries exceeded with URL” In Python?
When the Python script fails to establish a connection with a web resource after a certain number of attempts, the error ‘Connection error: Max retries exceeded with URL’ occurs. It’s often caused by issues like network problems, server unavailability, DNS errors, or request timeouts. In this article, we will see some concepts related to this error and reasons for occurring and fixing errors in Python.
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