5 Must‑Use Python Libraries That Simplify Email, HTTP, Monitoring & Web Scraping

1. yagmail

yagmail provides a simple interface for sending emails with attachments using just two lines of code, making the process far easier than the verbose examples in the official Python documentation.

2. requests

The requests library simplifies HTTP requests; a task that previously required multiple lines of code can now be performed with a concise snippet, as demonstrated by the comparison with raw urllib usage.

3. psutil

psutil offers powerful system monitoring and process management utilities, enabling developers to replace lengthy manual parsing of /proc files or external commands with concise, high‑level calls; it is also the backbone of tools like glances .

4. BeautifulSoup

BeautifulSoup dramatically simplifies HTML parsing compared to XPath or regular expressions, allowing developers to extract links and other elements with clear, readable code, as shown in the examples for crawling Zhihu user pages.

5. utils

Beyond third‑party libraries, many open‑source projects include useful helper modules such as DataStruct.py, helper.py, and utils.py, which contain reusable functions and data structures worth studying.