studiawan

# declare and fill list
courses = ['j2ee', 'progjar', 'paal']

# iterate each element
for course in courses:
  print(course)

# get index and value with enumerate
for index, value in enumerate(courses):
  print(index, value)

studiawan

# declaration without elements
courses = []

# declaration with elements
languages = ['python', 'java', 'c']
print(languages)

# fill the list
courses.append('progjar')
courses.append('j2ee')

studiawan

# declaration without brackets
# elements are separated with comma
address = 'localhost', 80, 21

# declaration with brackets
server_address = ('localhost', 5000)

# access by index
print(server_address[0])

studiawan

# declare dictionary
banner = {}

# fill dictionary
banner['os'] = 'Ubuntu Server 13.04'
banner['server'] = 'ProFTPd 1.3.4'
banner['up'] = 315.5
banner[200] = 'OK'

print(banner)

studiawan

# pay attention to code indentation
# python uses indentation, not curly brackets like in C

# print 0 to 4
for i in range(5):
    print(i)

# print 0 to 4 too
i = 0
while i < 5:

studiawan

import socket

# create socket and connect to server
server_address = ('localhost', 5000)
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_socket.connect(server_address)

# send string to server and close socket
client_socket.send(b'Hi ... ')
client_socket.close()

studiawan

import socket

# define server address, create socket, bind, and listen
server_address = ('localhost', 5000)
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind(server_address)
server_socket.listen(1)

# accept client, receive its message and print
client_socket, client_address = server_socket.accept()

studiawan

import socket
import sys

# define server address, create socket, bind, and listen
server_address = ('localhost', 5000)
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind(server_address)
server_socket.listen(5)

# infinite loop accepting client

studiawan

i = 5

# check i value
if i == 5:
    print("It is 5")
else:
    print("It is not 5")

# print 5 to 9 and say hello when it is 7
for i in range(5, 10):

studiawan

# very simple way: open-read-close
f = open('textfile.txt', 'r')
data = f.read() 
f.close()