1019Python_Meetup_Notes.md

###Boolean

# captical char with upper-case
myBool = True or False
print myBool

###range vs. xrange

print range(1, 10, 2)
print xrange(1, 1000000000) #use for big numerous range

###if Statement

var_for_if = 6
if var_for_if > 5:
  print "Statement 1"
elif var_for_if < 3:
  print "Statement 2"
else:
  print "Statement 3"

###List and join

my_list = ["aaa", "bbb", "ccc"]
print ",".join(my_list)

list_part = my_list[1: 2]
print list_part

my_obj = {"one": "one1", "two": "two2", "three": "three3"}
print my_obj.get("one")
print my_obj["two"]
print my_obj.get("undefined", "this key is undefined")  #second para as default value

###Module

• 同資料夾下

#dir\aaa.py
def print_in_aaa(from_file_name):
  print "print_in_aaa {0}".format(from_file_name)

#dir\bbb.py
import aaa
print aaa.print_in_aaa()

• 不同資料夾

#differentDir\aaa.py
def print_in_aaa(from_file_name):
  print "print_in_aaa {0}".format(from_file_name)

#dir\bbb.py
from differentDir import aaa
print aaa.print_in_aaa()

###Class

• 一般宣告與使用

#HomeClassFile.py
class Home(object):
  def __init__(self, arg):  #constructor
    super(Home, self).__init__()
    self.var_in_class = arg

my_home = Home("home@Taipei")
print my_home.var_in_class

• 使用其他.py的Class

#notHome.py
from HomeClassFile import Home
#或
from HomeClassFile import *