[Examples] python variable data types and data type immutable

1  # 1 and the determination value gl_num gl_list of 
2  DEF Demo (NUM, num_list):
 . 3      NUM = + NUM
 . 4      num_list + = num_list
 . 5  
. 6      Print (NUM)   # 18 is 
. 7      Print (num_list)   # [1, 2,. 3, . 1, 2,. 3] 
. 8  
. 9      Print ( " function to complete " )
 10  
. 11  
12 is gl_num. 9 =
 13 is gl_list = [. 1, 2,. 3 ]
 14  Demo (gl_num, gl_list)
 15  Print (gl_num)   # . 9 
16 print(gl_list)  # [1, 2, 3, 1, 2, 3]

1  # 2. Say list1, what values list2, list3 that and why 
2  DEF extendlist (Val, LIS = []):
 . 3      lis.append (Val)
 . 4      return LIS
 . 5  
. 6 List1 = extendlist (10 )
 . 7 List2 = extendlist (123 , [])
 . 8 list3 = extendlist ( ' A ' )
 . 9  
10  Print (List1)   # [10, 'A'] 
. 11  Print (List2)   # [123] 
12 is  Print (list3)   # [10 , 'a']

1  # 3. Say acts [0] value (2), and why 
2  DEF makeActions ():
 . 3      Acts = []
 . 4      for I in Range (. 5 ):
 . 5          acts.append ( the lambda X: I * * X)
 . 6      return Acts
 . 7  
. 8  
. 9 Acts = makeActions ()
 10  Print (Acts [0] (2))   # 16 
. 11  Print (Acts [. 1] (2))   # 16 
12 is  Print (Acts [2] (2) )   # 16 
13  Print(acts[3](2))  # 16
14 print(acts[4](2))  # 16
15 
16 print("~"*50)
17 
18 def makeActions():
19     acts = []
20     for i in range(5):
21         acts.append(lambda x, i=i: i ** x)
22     return acts
23 
24 
25 acts = makeActions()
26 print(acts[0](2))  # 0
27 print(acts[1](2))  # 1
28 print(acts[2](2))  # 4
29 print(acts[3](2))  # 9
30 print(acts[4](2))  # 16