A Python script may need to pause before it continues. Python’s wait functions pause a program for a chosen duration or until a condition changes. I’ll show how to add a fixed delay and use an asynchronous pause when other…
To find a t critical value in Python, use the test’s significance level and degrees of freedom. A t critical value is a boundary from the t distribution that you compare with the test statistic. This article shows how to…
Understanding what ReLU does to an input helps when you use it in Python. ReLU is an activation function that returns the larger of zero and its input. I’ll show how to define a scalar ReLU function and read its…
Making predictions with a Python model starts with understanding the result it returns. The predict() method applies a fitted model to input examples and returns an output based on the model and its task. I’ll explain how to read predict()…
Using category labels as features in Python starts with encoding them into a form a model can use. A one-hot encoding gives each category its own binary feature column. I’ll walk through encoding columns and checking how the fitted encoder…
When a Python calculation needs a particular kind of numeric representation, it helps to know what the built-in float provides. On standard builds, float uses double-precision binary floating point, while Decimal and Fraction offer other ways to represent values. This…
Creating a game in Python can start with a terminal version of Mastermind. Python chooses a hidden four-letter color code and gives a clue after each valid guess, showing exact matches and colors in the wrong positions. This article shows…
When Python prints “Exception ignored in,” check the traceback to find the code that raised the exception. Python uses this message when an exception cannot be returned to an ordinary caller, often during cleanup. I’ll explain what the message means…
A Python function sometimes needs to let another function choose how to handle a value. Passing the function by name gives the receiving function a callable it can invoke when needed. I’ll explain when to pass a function rather than…
When a Python script stops at import tensorflow, the active environment cannot find the package. TensorFlow is the Python package that provides the tensorflow import. This article explains how to install TensorFlow in the Python environment running your code and…