Problem Formulation In Python’s interactive mode, each line is assumed to be an expression that is evaluated. The return value is provided to the user. Thus, if you evaluate a string expression or call a function or an operation that returns a string, the output will display quotes around the string to tell the user … Read more
When it comes to developing web applications in Python there are lots of frameworks. Some examples are Pyramid, Web2Py, Bottle or CherryPy, among others. However, the two most popular ones are Flask and Django. We can confirm this fact by having a look at the most starred Python libraries in GitHub: As we will see … Read more
Problem Formulation In some shell environments, when printing a large NumPy array, the Python interpreter automatically displays only a small, truncated portion of the array, using the triple dots ‘…’ to indicate that some values are missing in the textual representation of the array. Here’s an example of a truncated array: Here’s how that looks … Read more
Problem Formulation Given a floating point number x = 123.456. How to print the number without decimal remainder? Solution 1: int() Python’s built-in function int(x) converts any float number x to an integer by truncating it towards 0. For example, positive int(1.999) will be truncated to 1 and negative int(-1.999) to -1. To boost your … Read more
Problem Formulation If you print a float value in Python that is smaller than 0.0001, Python will use the scientific notation for small numbers such as 1e-05 that is short for 1*1/10**-5. Here’s an example output when printing smaller and smaller floats to the shell. If there are more than three zeros after the decimal … Read more
Parentheses are used to initiate a function call in Python. Here are three examples: f() calls custom function f without an argument, print(‘hello world’) calls built-in function print with the string argument ‘hello world’, and range(2, 10, 3) calls built-in function range on the integer arguments 2, 10, and 3. A common question among Python … Read more
Andrews curves are used to identify structure in a multi-dimensional data set. By reducing complex data to a two-dimensional graph, we can more easily identify variables in the data that are associated, form clusters, or are outliers. We’ll show you how to plot such graphs, but before we get to that, let’s ensure every reader … Read more
Problem Formulation Python’s print() function allows an arbitrary number of comma-separated values and prints them to the shell, separated by a single empty space character ‘ ‘. The following example shows how you pass four string values as arguments into the print() function: The resulting shell output has an added empty space character ‘ ‘ … Read more
Do you need to create a function that returns a dictionary but you don’t know how? No worries, in sixty seconds, you’ll know! Go! ? A Python function can return any object such as a dictionary. To return a dictionary, first create the dict object within the function body, assign it to a variable your_dict, … Read more
Do you need to create a function that returns a tuple but you don’t know how? No worries, in sixty seconds, you’ll know! Go! ? A Python function can return any object such as a tuple. To return a tuple, first create the tuple object within the function body, assign it to a variable your_tuple, … Read more
Do you need to create a function that returns a set but you don’t know how? No worries, in sixty seconds, you’ll know! Go! ? A Python function can return any object such as a set. To return a set, first create the set object within the function body, assign it to a variable your_set, … Read more
Do you need to create a function that returns a list but you don’t know how? No worries, in sixty seconds, you’ll know! Go! 👇 Python Return List Basic A Python function can return any object such as a list. To return a list, first create the list object within the function body, assign it … Read more