Tux Machines
Posted by Roy Schestowitz on Jul 30, 2023
=> Raspberry Pi Projects | Security Leftovers
=> ↺ Posit Package Manager for Linux R Binaries
I’ve been getting a lot of use recently from the Posit (née RStudio) Package Manager (PPM), because it offers freely available R package binaries for quite a few Linux...
=> ↺ Grover’s algorithm with qsimulatR
Cover photo by gorodenkoff on iStock This is the third article of the Quantum Computing simulation with R series.
=> ↺ Debugging the keyboard navigation in your QML application
A neat trick to debug the keyboard navigation in your QML application is to put the following code snippet in your main.qml: [...]
=> ↺ Linux Plumbers Conference: Rust MC CFP
LPC 2023 will host the second edition of the Rust MC. This microconference intends to cover talks and discussions on both Rust for Linux as well as other non-kernel Rust topics. Proposals can be submitted via LPC submission system, selecting the Rust MC track.
Rust is a systems programming language that is making great strides in becoming the next big one in the domain. Rust for Linux is the project adding support for the Rust language to the Linux kernel.
Rust has a key property that makes it very interesting as the second language in the kernel: it guarantees no undefined behavior takes place (as long as unsafe code is sound). This includes no use-after-free mistakes, no double frees, no data races, etc. It also provides other important benefits, such as improved error handling, stricter typing, sum types, pattern matching, privacy, closures, generics, etc.
=> ↺ LPC submission system | ↺ Rust for Linux
By using the “os.rename()” function, “shutil.move()” function, or using the “os” module, users can rename a single or bulk of files using Python.
In Python, the “os.path” module of the “os” library provides several functions to work with specified paths in various operating systems.
=> ↺ Python Random Shuffle Method
The “random.shuffle()” method of the “random” module is used to shuffle a list of strings or a list of integers in Python.
The tkinter grid is a two-dimensional table with rows and columns, where each cell can hold a widget such as buttons, labels, or entry fields.
=> ↺ Get the Pandas DataFrame Rows Based on Index
The “DataFrame.iloc[]” and the “DataFrame.loc[]” method of the “Pandas” module is used to get the Pandas DataFrame rows based on the index.
The “seaborn.heatmap()” function of the “Seaborn” module is utilized in Python to plot/create rectangular data in the color-coded matrix form.
=> ↺ How to Catch All Exceptions in Python
The “try” and “except” statement, the “raise” exception, and the “logger.exception” method is used to catch all exceptions in Python.
The “os.environ” is a mapping object or built-in dictionary in Python that represents all the user’s environment variable values in key-value pairs set.
=> ↺ Pandas DataFrame Select Rows By Condition
The relational operators, “df.isin()”, “&” operator, and “df.loc[]” methods, are used to select DataFrame rows based on particular conditions.
=> ↺ Print Stacktrace in Pyhton Log
The “traceback” or “logging“ module provides several functions that are used in Python to log the error message and the Stacktrace.
=> ↺ Pandas Distinct Values Column
The “pandas.unique()”, “Series.unique()”, “Numpy.unique()”, and “pandas.concat()” methods are used to get distinct values of the Pandas DataFrame column.
“Tkinter-treeview” is a specialized widget in “Tkinter” that presents hierarchical data structures in a tree-like format.
=> ↺ Python Priority Queue Example
In Python, the “List”, “heapq”, and “queue.PriorityQueue” methods are used to implement Priority Queues and return data items based on their priority.
=> ↺ How to find the average of a list in Python
The average of a list in Python can be found using the iterative method, sum() and len() functions, reduce() and lambda() functions, numpy, or statistics modules.
The “df.to_csv()” function of the Pandas module is used to append Pandas DataFrame to CSV (Comma Separated Value) file in Python.
The “scipy.linalg” module and the “scipy.sparse” module of the Scipy library is used to perform various operations on Scipy matrices in Python.
The “random.randint()” or the “random.randrange()” methods of the “random” module are utilized to generate/create a random integer in Python:
The “os.getenv()” method of the “os” module is utilized in Python to retrieve the environment variable key value if it is present.
The “groupby()” method splits data into groups based on columns and finds total values in a column for each group using the agg method, such as “count”.
The “pd.DataFrame()” columns parameter, “DataFrame.columns” method and the “DataFrame.set_axis()” method is used to add a header to Pandas DataFrame in Python.
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