Variables in Python in the biological context

Variables in Python in the biological context

There are four main types of variables in Python [ or any other programming language], those are [ String, Integer, Float, and Boolean].

A string variable is a text data assigned to a variable as shown below:
>>> DNA = "TCGA"
>>> print(DNA)
>>> TCGA
An integer variable ,on the other hand, is a numerical variable that contains whole number data, as shown below:

>>> print(DNA.count("A"))
1

a float variable holds numeric data with decimal places, like:


>>> 1/4
0.25
>>> print("A ratio :", (1/4)*100, "percent")
A ratio : 25.0 percent

while boolean variables are used in logical tests and statements, like:

>>> if (True):
print("A" in DNA)


True


or 

>>> if (True):
print("U" in DNA)


False


this is summarized in the link video below:

Variables_LINK