Opening files in python is probably the most common thing. Here are a few ways to open a file.
A few examples of opening up Biogenomic fasta file.
file_handler = open("dna1.fasta", "r")
file = file_handler.read()
print(file.count('>'))
with open('dna1.fasta') as the_file:
for line in the_file:
print(line.rstrip())
#This is becoming my preference but I am not sure how to close the file handler.
for file_contents in open("dna1.fasta"):