This Python script is an automation program designed to download...
August 28, 2025 at 06:25 PM
This Python script is an automation program designed to download a file from a specified website, manage the downloaded file, and save it to a designated directory. Let’s break down its core functionality and purpose:
Overview of What the Code Does:
-
Configuration Loading:
- Reads settings (e.g., file paths, URLs, timeouts, etc.) from a
config.ini
file. - Sets up directories for downloads (
DOWNLOAD_FOLDER
) and the destination folder (DESTINO
). - Handles timeout settings and retry attempts for the automation.
- Reads settings (e.g., file paths, URLs, timeouts, etc.) from a
-
Logging Setup:
- Logs all actions and errors to a log file (e.g.,
robo_extracao.log
) and also prints them to the console.
- Logs all actions and errors to a log file (e.g.,
-
Folder Management:
- Checks whether the required folders exist and creates them if necessary.
-
Web Browser Automation:
- Uses
Selenium WebDriver
to automate browser actions in a Google Chrome browser. - Allows the user to manually log in to a specified website (
LOGIN_URL
). - Automates the process of downloading a data file (
DOWNLOAD_URL
).
- Uses
-
File Management after Download:
- Waits for the download to complete by monitoring the download folder for partial download files (such as
.crdownload
or.tmp
). - Locates the most recently downloaded file matching a specific filename prefix and file extension.
- Moves the downloaded file to a designated destination folder and confirms its transfer.
- Waits for the download to complete by monitoring the download folder for partial download files (such as
-
Error Handling and Retry:
- Attempts the file download process up to a maximum number of retries (
MAX_TENTATIVAS
) in case of errors or failures. - Implements delays between retry attempts to allow the user or system to recover.
- Attempts the file download process up to a maximum number of retries (
-
User Interaction:
- Waits for the user to manually log in to the system using the browser.
- Reacts when the user presses the
F5
key by starting the download and extraction process. - Allows the user to cancel the script by pressing the
ESC
key.
-
Timeout Handling:
- Terminates the download and extraction process if the maximum timeout (
TIMEOUT_DOWNLOAD
) is reached or if all retry attempts have been exhausted.
- Terminates the download and extraction process if the maximum timeout (
Step-by-Step Details:
Initial Setup:
- Imports required libraries (
os
,time
,shutil
,logging
,Selenium
, etc.). - Reads settings from the
config.ini
file into variables likeDOWNLOAD_FOLDER
,DESTINO
, andDOWNLOAD_URL
.
Main Flow in main()
Function:
- Folder Verification: Ensures the destination folder exists; if it cannot be created, the script exits early.
- Web Browser Initialization: Launches a Chrome browser with specific download preferences to automate downloading files.
- Prompts the user to log in manually and navigate to the relevant page.
- User-driven Actions: Listens for user input (
F5
to proceed,ESC
to cancel) to control the process.
File Download and Extraction (executar_extracao
):
- Automates downloading a file from the specified
DOWNLOAD_URL
in a new browser tab. - Waits for the download to complete by checking for the absence of
.crdownload
files in the folder. - Searches for the most recently downloaded file matching specific criteria (e.g., filename prefix "Rel-PostesAbalroados-G2E" and extension
.xls
). - Moves the downloaded file to the destination directory, preserving the filename.
Retry Logic:
- Repeats the entire process (up to
MAX_TENTATIVAS
times) if downloading or extraction fails. - Introduces delay (
ESPERA_ENTRE_TENTATIVAS
) between retries to allow recovery.
Error Handling:
- Logs all errors to both the console and
robo_extracao.log
. - Safely shuts down the browser in case of exceptions.
- Terminates gracefully if all retries fail.
Purpose of the Code:
This script is likely a data scraper or file management tool designed to:
- Automate downloading of specific files (e.g., reports) from a web-based system.
- Handle manual intervention (user logins) within an automated process.
- Move extracted data files to appropriate directories for further processing or archival.
- Provide robust logging for debugging and auditing.
Real-World Use Case:
The script appears to be tailored for corporate or team environments where reports must be routinely downloaded and processed from a company intranet or external website. It streamlines what would otherwise be a manual and repetitive task.
Generate your own explanations
Download our vscode extension
Read other generated explanations
Built by @thebuilderjr
Sponsored by beam analytics
Read our terms and privacy policy
Forked from openai-quickstart-node