How-to articles, tricks, and solutions about PYTHON

In Python, you can use the built-in list() function to convert a string into a list of characters.

You can access the ith column of a NumPy multidimensional array by using the following syntax:

You can use the split() method to split a string on whitespace in Python.

You can replace NaN values in a column of a Pandas Dataframe by using the fillna() method and passing in the value you want to replace NaN with.

You can use the numpy.genfromtxt() function to read CSV data into a NumPy record array.

You can use the .encode() method to convert a Unicode string to a string containing extra symbols in Python.

You can use the re module in Python to use regular expressions with the replace() method.

Here is a code snippet that demonstrates how to change a single character in a string in Python:

In Python, you can use the str.find() method to find the index of the first marker, and the str.rfind() method to find the index of the second marker.

Here's an example of how you can get the first row value of a given column in a Pandas DataFrame in Python:

Here is an example code snippet that counts the frequency of values in a column of a Pandas DataFrame:

Inline if statements, also known as ternary operators, can be used to write a shorthand version of an if-else statement.

You can change the figure size of a Seaborn plot by using the set_size_inches() method of the matplotlib.pyplot.figure object and passing in the desired width and height.

Here is a simple code snippet that demonstrates how to add a legend to a PyPlot in Matplotlib:

Here is an example code snippet that demonstrates how to read a binary file and loop over each byte in Python:

To uninstall Python 2.7 on a Mac OS X 10.6.4, you can use the following commands in the terminal:

To create a Pandas DataFrame from a Numpy array and specify the index column and column headers, you can use the pd.DataFrame() constructor and pass in the Numpy array, as well as the index, columns parameters.

Here is an example code snippet for writing a string to a file on a new line every time in Python:

To install PIL (Python Imaging Library) using pip on Mac OS, you can use the following command in your terminal:

This error occurs when a file or string that is being decoded using the UTF-8 encoding contains an invalid byte sequence.

Here is an example of how to print multiple arguments in Python:

This error occurs when you are trying to access a variable before it has been assigned a value.

Here is a code snippet that demonstrates how to catch the "ImportError: No module named PIL" error:

Here is a code snippet that demonstrates how to handle the "No module named pip" error:

You can use the len() function to count the number of elements in a list.