====Programming - Python====

  * Download Python
    * [[https://www.python.org/downloads/]]\\ 
  * Download Visual Studio Code
    * [[https://code.visualstudio.com/]]\\ 
  * Install Requests module
    * [[https://www.agiratech.com/install-requests-library-in-python]]\\ 
    * From the Windows cmd line
      * <code>python -m pip install requests</code>
    * From Linux shell
      * <code>pip install requests</code>
      * or
      * <code>pip install pipenv</code>
  * Import Requests module into Python
    * From Python cmd line
      * <code>import requests</code>\\ 

====Notes====
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/167/b_167_programmability_cg/python_api.html

print("This line will be printed.")


x = 1
if x == 1:
    # indented four spaces
    print("x is 1.")


To define an integer:
	myint = 7
	print(myint)

To define a floating point number:
	myfloat = 7.0
	print(myfloat)
	myfloat = float(7)
	print(myfloat)

Two ways strings are defined:
	mystring = 'hello'
	print(mystring)
	mystring = "hello"
	print(mystring)

An example on why you would use double-quotes:
	mystring = "Don't worry about apostrophes"
	print(mystring)
	
one = 1
two = 2
three = one + two
print(three)

hello = "hello"
world = "world"
helloworld = hello + " " + world
print(helloworld)

output: 
3
hello world

Assignments can be done on more than one variable "simultaneously" on the same line like this:
a, b = 3, 4
print(a,b)

output:
3 4

Mixing operators between numbers and strings is not supported:
# This will not work!
one = 1
two = 2
hello = "hello"

print(one + two + hello)

mystring = "hello"
myfloat = 10.0
myint = 20

# testing code
if mystring == "hello":
    print("String: %s" % mystring)
if isinstance(myfloat, float) and myfloat == 10.0:
    print("Float: %f" % myfloat)
if isinstance(myint, int) and myint == 20:
    print("Integer: %d" % myint)

output:
 String: hello
    Float: 10.000000
    Integer: 20

mylist = []
mylist.append(1)
mylist.append(2)
mylist.append(3)
print(mylist[0]) # prints 1
print(mylist[1]) # prints 2
print(mylist[2]) # prints 3

# prints out 1,2,3
for x in mylist:
    print(x)

Exercise
In this exercise, you will need to add numbers and strings to the correct lists using the "append" list method. You must add the numbers 1,2, and 3 to the "numbers" list, and the words 'hello' and 'world' to the strings variable.

You will also have to fill in the variable second_name with the second name in the names list, using the brackets operator []. Note that the index is zero-based, so if you want to access the second item in the list, its index will be 1.

numbers = [1,2,3]
strings = ["hello","world"]
names = ["John", "Eric", "Jessica"]

# write your code here
second_name = names[1]


# this code should write out the filled arrays and the second name in the names list (Eric).
print(numbers)
print(strings)
print("The second name on the names list is %s" % second_name)

output:
    [1, 2, 3]
    ['hello', 'world']
    The second name on the names list is Eric

Or you can use:
numbers = []
strings = []
names = ["John", "Eric", "Jessica"]

# write your code here
numbers.append(1)
numbers.append(2)
numbers.append(3)

strings.append("hello")
strings.append("world")

second_name = names[1]

# this code should write out the filled arrays and the second name in the names list (Eric).
print(numbers)
print(strings)
print("The second name on the names list is %s" % second_name)

number = 1 + 2 * 3 / 4.0
print(number)

output:
2.5

remainder = 11 % 3
print(remainder)


====Backlinks====
[[:programming|Programming]]\\