Typosquatting is an attack where attackers upload a similar looking package to a popular package (e.g., request, urllib3), often embedded with malicous code.
Typosquatting is an attack where attackers upload a similar looking package of a popular package (e.g., request, urllib3) to the package repository, often embedded with malicious code.
Early this month, Michael Salsone (@0xPopsiclestick) spotted a malicious package called request. The package looks similar to the popular package requests (https://pypi.org/project/requests/) with more than 40K stars in Github.
The number of downloads (victims) of the malicious package was significant as indicated by the following tweet.
I wanted…
This post will walk you through some Python obscure examples and inspect the implementation behind them. I hope this will be useful.
- Example 1 (source https://twitter.com/raymondh/status/1284331532153286656?s=20)
I disassemble the code to see what is going on to understand why we have such result.
At first glance, the codes from line 10 to Line 20 is the for loop.
Here, I notice that the instruction at line 11 Python pushes the reference of the variable s on the stack, and then Python pushes the constant 0, which is the first index of the list s. …
Python generates a bytecode from the source code of a module when it is first imported to improve the performance of loading a module. There are some scenarios in which Python will make a decision on using an existed bytecode file (.pyc) or recompile the source code file (.py) [1, 2]. In this post, I will experiment to understand better.
Let’s say you develop a module called “helloworld.py” containing your first greeting to the world.
At this moment, you have only a single file in your project.
Springer has freely released 65 books (this post), I want to download all the books but, I felt it is really tedious to click on each book URL, follow the link, and download the book.
In this post, I will show you how to use Python to download all the books automatically from the original Medium post . The idea is to programmatically carve out all downloadable book URLs, download, and save them to a google drive folder.
Let’s get started!
- Importing necessary modules.
I use some functions from urllib.request to download a webpage (e.g., a Medium post) and book…
The book “Tribe of Mentors: Short Life Advice from the Best in the World” gives me a list of recommended books by the interviewees.
I will list out the list of the books along with quotes from the interviewees about the books. You can find the list of top recommended books at https://tim.blog/2017/11/18/booklist/, which are the ones in my to-read list.
- Man’ Search for Meaning by Viktor E. Frankl:
- “The importance and power of purpose of life”
- “It changed the way I think about human suffering and grace in life”
- “I give them one of my books, and if they’re…
Reading this post (https://towardsdatascience.com/five-cool-python-looping-tips-14f6f44bcfc7) gives me some new ideas of iterating a sequence. One of the ideas is to use the filter function to filter irrelevant items while looping. The code below demonstrates the use of the filter function on an iterable (a dictionary in this case)
In our code, we need to define a condition in a for loop and a lambda function and then use the filter with two arguments: the lambda function and the original iterable. …
Given a compressed file in gzipped or zip format, how can we read the files inside the compressed file? In this post, I will show you two ways of accessing files in a compressed archive.
- Setup
I import some libraries for downloading, and extracting the compressed file, and calculating the hashes of files in the compressed file.
I prefer reading the content of the compressed file as a series of bytes instead of the downloaded file, so we do not need to care about removing the file after using it.
2. Extracting the compressed file using a temporary directory
…
When you code or write a text, for example, in Latex, you may need to go from a specific location to another. It can be done by using scrolling your touchpad (which is nice with MacOS), but it may be tedious as you have to focus on the cursor and stop at where you want to go.
We can do something smarter by using some plugins; let’s start with Latex.
Latex
Let’s say you are writing a paper. You can list out sections in the paper and navigate to a section using a plugin called vimtex (https://github.com/lervag/vimtex). …
When working with a table in Latex, you often need to modify the cells in the table.
Let’s say you are woking on a table that has three rows and five columns.
\begin{table}[]
\begin{tabular}{lllll}
row0 & row1 & row2 & row3 & row4 \\
a & aaa& bbbbc& dddd & e \\
10 & 21 & 33 & 4 & 5 \\
a & b & cc & 1 & 2
\end{tabular}
\end{table}
The current form of the above table is not good-looking and it may required additional effort to find a specific cell in the table. We can align…
When writing a paper using Latex, we may need to edit some tags (e.g., table, figure, and so on). Let’s say you create a table, and you want to make it spread out over two columns of the page (assuming you are using a two-column format paper). One of the ways to do this is to change \begin{table}…\end{table} to \begin{table*}…\end{table*}.
Let’s take an example. The above figure shows a typical latex table. You can manually go to the first line, and insert a star at the end of the tag:
