User defined Python functions
Although Python provides a wide array of built-in Python functions, it does not suffice in tackling issues we would face while we develop programs and applications. As Python programmers, we might need to break down the programming challenge into smaller chunks and implement them in the form of custom or user defined functions. The concept of writing functions is probably an essential feature of any programming language.
Functions are defined using the
def keyword, followed by an identifier name along with the parentheses, and by the final colon that ends the line. The block of statements which forms the body of the function follows the function definition. Here’s a simple example.
“””Block of statement.
or Body of function.”””
print(‘ Hello from inside the function!’)
The above defined
greet function can be called using its name as shown here.
# Calling the function
And the output will be
Hello from inside the function.
In the next installment, the author will discuss Python functions with a single argument.
Visit https://www.quantinsti.com/ for ready-to-use Python functions as applied in trading and data analysis.
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