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Online How to Python stuff

How to create violin plot using seaborn?

Posted on March 22, 2023March 2, 2023 By Luke K

Let’s learn together how to create violin plot using seaborn Python library.

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Seaborn

How To Use Colormaps In Matplotlib?

Posted on March 19, 2023March 2, 2023 By Luke K

Using colormaps in Matplotlib is a simple process. You can set the color map of a plot using the cmap keyword argument of various Matplotlib functions. In this section, we will discuss how to use colormaps in Matplotlib using some examples.

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matplotlib

How to calculate bonds in Python

Posted on March 16, 2023 By Luke K

Let’s learn on how to calculate bonds in Python.

In this post, we will explore how to calculate bond prices in Python, including the formulas and variables involved. We will also cover the calculation of zero coupon bonds, which are a special type of bond that does not pay periodic interest. Finally, we will provide a real-life example of how bond calculations can be used in finance and investing.

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Uncategorized

How to handle trigonometry in Python

Posted on March 16, 2023March 16, 2023 By Luke K

Trigonometry is the branch of mathematics that deals with the relationships between the sides and angles of triangles. Trigonometric functions are mathematical functions that relate the angles of a right triangle to the lengths of its sides. The three basic trigonometric functions are sine, cosine, and tangent.

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math

How to Convert Int to Binary in Python?

Posted on March 14, 2023 By Luke K

To convert an integer (int) to binary in Python, you can use the built-in bin() function. Here’s how:

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Python

How to fix ValueError: The truth value of an array with zero elements is ambiguous?

Posted on March 13, 2023March 13, 2023 By Luke K

This error typically occurs when you are trying to use an empty array as a Boolean condition in an if-statement or a while-loop. The error message is telling you that the truth value of an empty array is ambiguous because there is no value to evaluate.

Here is an example code that can produce this error:

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numpy

How to solve NameError: name ‘numpy’ is not defined

Posted on March 12, 2023February 21, 2023 By Luke K

The “NameError: name ‘numpy’ is not defined” error message is typically encountered when trying to use the NumPy library in Python but the library has not been imported or has not been imported correctly.

To fix this error, you need to ensure that you have installed the NumPy library in your environment and that you have imported it correctly in your code. Here are some steps you can follow:

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numpy

How to insert seaborn lineplot?

Posted on March 11, 2023March 10, 2023 By Luke K

To insert a Seaborn lineplot in Python, you can follow these steps:

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Seaborn

How to Find the Length of an Array in Python?

Posted on March 10, 2023 By Luke K

In Python, you can find the length of an array using various methods. The most commonly used method is the built-in len() function, which returns the number of elements in an array. Here’s an example of how to use len() to find the length of an array:

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Python

How to reset secret key in Django

Posted on March 10, 2023March 2, 2023 By Luke K

To reset the secret key in Django, you need to follow these steps:

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Django

How to solve TypeError: ‘numpy.int64’ object is not callable

Posted on March 7, 2023February 21, 2023 By Luke K

The “TypeError: ‘numpy.int64’ object is not callable” error is usually caused by attempting to call a variable or object that is not a function or method.

Here are a few steps you can follow to try and solve the error:

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numpy

How to solve AttributeError: module ‘numpy’ has no attribute ‘random’

Posted on March 3, 2023February 21, 2023 By Luke K

The error “AttributeError: module ‘numpy’ has no attribute ‘random'” can occur when you try to use the “random” submodule of the NumPy library, but it cannot be found. Here are some possible solutions:

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numpy

How to solve TypeError: ‘numpy.float64’ object is not iterable

Posted on February 27, 2023March 1, 2023 By Luke K 1 Comment on How to solve TypeError: ‘numpy.float64’ object is not iterable

The error message “TypeError: ‘numpy.float64’ object is not iterable” usually occurs when you try to iterate over a numpy float64 object directly.

To solve this error, you need to ensure that you are not trying to iterate over a single numpy float64 object. Instead, you should iterate over a numpy array or a Python list.

Here is an example of how to fix this error:

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numpy

How to solve TypeError: only integer scalar arrays can be converted to a scalar index

Posted on February 21, 2023March 1, 2023 By Luke K

The error “TypeError: only integer scalar arrays can be converted to a scalar index” typically occurs when you are trying to use a non-integer value as an index for an array. Here are some steps you can follow to solve the error:

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Python

How to solve ValueError: setting an array element with a sequence

Posted on February 19, 2023March 1, 2023 By Luke K 1 Comment on How to solve ValueError: setting an array element with a sequence

The ValueError: setting an array element with a sequence error typically occurs when you try to assign a sequence (e.g., list, tuple) to an element of a numpy array that expects a scalar value.

To solve this error, you need to make sure that you are assigning a scalar value to the array element, rather than a sequence.

Here are some steps you can take to solve this error:

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numpy

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  • How to create violin plot using seaborn?
  • How To Use Colormaps In Matplotlib?
  • How to calculate bonds in Python
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  • How to fix ValueError: The truth value of an array with zero elements is ambiguous?
  • How to solve NameError: name ‘numpy’ is not defined
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