argv Command Line Arguments and the re Module

Accepting arguments from command line

import sys

argument_1 = sys.argv[1]
argument_2 = sys.argv[2]

print(argument_1, argument_2)

# To accept an unlimited amount of args:
agrument_infinite = sys.argv[1:]
# agrument_infinite will be a list

# To itterate through arguments:
for arg in agrument_infinite:
	print(arg)

• argv[0] - is by default the name of the application - application.py from below

• You would run this from the command line like this:

python3 /path/to/application.py <arg1> <arg2>

The re module (RegEX Module)

• Search for things using regular expressions

• The re.findall("string", text_variable) returns a list of the times it found the string

  • Example:

import re

text = "The rain in Spain"
x = re.findall("ai", txt)
print(x)
# Returns list ["ai", "ai"]