Python Use lru_cache to store calculation results. Using the @lru_cache decorator can speed up function execution. LRU stands for least recently used. The recently used calculation results are kept in this limited capacity pool. To prevent the pool from growing…
Python Monad’s bind() Function and >> Operator. The PyMonad library gets its name from the functional programming concept of monads, which states that a function is evaluated in a strict order. A fundamental assumption underlying many functional programming approaches is…
Python filter() Function to Detect Outliers. Several statistical functions were previously defined for calculating the mean, standard deviation, and normalizing the data. To use these functions to find outliers in the data, we first apply the mean() and stdev() functions…
Python Creating a WSGI Application begins with a simple URL pattern matching expression to define a unique route within the application. In a larger or more complex application, there might be more than one pattern: import re path_pat= re.compile(r"^/anscombe/(?P<dataset>.*?)/?$") Using…
Python Calculate the Incomplete Gamma Function. The incomplete gamma function has a series expansion, which means that a series of values must be calculated and then summed. For more information, visit This series has infinitely many terms, and these…
Python Counter filters and reduces raw data. We represent the basic defect count as a collections.Counter parameter. Next, we construct a defect count based on the rotation and defect type in the raw data. The following code reads some raw…
Python Calculating Expected Values and Displaying Contingency Tables. The expected defect output is a combined probability. Next, we will calculate the product of the rotation defect probability and the defect type probability. To do this, we need to calculate all…
Python The star map operator, itertools.starmap(), is a variant of the higher-order function map(). The function map() applies a function to each item in a sequence. The function starmap(f, S) assumes that each item i in the sequence S is…
Python any and all functions for reduction You can use the functions any() and all() to perform Boolean reduction, reducing the elements of a collection to a single value (True or False). The all() function ensures that all values are…
Python Complex tail call optimization, you can define the Fibonacci sequence in a recursive form. The formula for calculating the nth Fibonacci number F_n is as follows: The Fibonacci number F_n is defined as the sum of its two preceding…