Random Module

Author: AyemunHossain

Random_module part 1.py

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+#;==========================================
+#; Title:  Python Random module part 1
+#; Author: @AyemunHossain
+#;==========================================
+
+
+import random as r 
+
+#random integer
+print(r.randint(1,100))
+print(r.randint(1,100))
+print(r.randint(1,100))
+
+#randrange
+print(r.randrange(10,100,5))
+print(r.randrange(10,100,5))
+print(r.randrange(10,100,5))
+
+#random floating numbers
+print(r.random())
+print(r.random())
+
+#random floating within given range
+print(r.uniform(5,10))
+print(r.uniform(5,10))
+print(r.uniform(5,10))
+
+#random.choice() example 
+
+list_1=[1,2,3,4,5,6,7,8,9]
+
+print(r.choice(list_1))    #This choice is not cryptographically secured 
+print(r.choice(list_1)) 
+print(r.choice(list_1)) 
+
+#choice in dictionary
+dictt={
+  "Kelly": 50,
+  "Red": 68,
+  "Jhon": 70,
+  "Emma" :40
+}
+
+key=r.choice(list(dictt))
+value=dictt[key]
+print(f"{key} : {value}")
+
+
+#let's chose same element every time : by help of seed method
+print("Now we are selecting the same element everytime : ")
+r.seed(4)
+key=r.choice(list(dictt))
+value=dictt[key]
+print(f"1 - {key} : {value}")
+
+r.seed(4)
+key=r.choice(list(dictt))
+value=dictt[key]
+print(f"2 - {key} : {value}")
+
+r.seed(4)
+key=r.choice(list(dictt))
+value=dictt[key]
+print(f"3 - {key} : {value}")
+
+r.seed(4)
+key=r.choice(list(dictt))
+value=dictt[key]
+print(f"4 - {key} : {value}")

Random_module part 2.py

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+#;==========================================
+#; Title:  Python Random module part 2
+#; Author: @AyemunHossain
+#;==========================================
+
+import random as r 
+
+multi_list=[[1,2,3,4],[5,6,4,2],[6,5,4,8],[9,8,7,441]]
+print(r.choice(multi_list))
+
+#multiple choices : 
+sample_list=[1,2,3,4,5,6,47,28,76,85,74,78]
+print(r.choices(sample_list,k=5))   #5 choices among them
+
+#choose from set : 
+set1={20, 35, 45, 65, 82}
+print(r.choice(tuple(set1)))	#you need to convert set in tuple
+
+#sample modules : 
+sample_list=[1,2,3,4,5,6,47,28,76,85,74,78]
+sl=r.sample(sample_list,k=5)    #it will make a sample of k number of element from the sample list 
+print(sl)
+
+sample_set={1,2,3,4,5,6,47,28,76,85,74,78}    #lets make a sample from set
+print(r.sample(sample_set,k=4)) 
+
+sample_dict = { "Kelly": 50, "Red": 68, "Jhon": 70, "Emma" :40 }
+print(r.sample(list(sample_dict),k=3)) 	#return the keys in a sample list
+
+#another way to do this 
+
+dictt={
+  "Kelly": 50,
+  "Red": 68,
+  "Jhon": 70,
+  "Emma" :40,
+  "Ashik" : 79,
+  "Musleh": 99,
+  "Lia": 100,
+  "Miskat": 66,
+  "Jacce": 90
+}
+
+print(r.sample(dictt.items(),k=5)) 	#return a list of key and value 
+
+#so what's difference between choice and sample :
+#sample makes the random sample of given iter
+#choice makes random choice of given iter with repeated value 
+#let's seeeeeeeeee
+sample_list=[1,2,3,4,5,6,47,28,76,85,74,78]
+print(f"Always Unique :          {r.sample(sample_list,k=5)}")
+print(f"Some time repeted :      {r.choices(sample_list,k=5)}")

Random_module part 3.py

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+#;==========================================
+#; Title:  Python Random module part 3
+#; Author: @AyemunHossain
+#;==========================================
+import random as r 
+
+
+#whole random module is controled by seed value 
+r.seed(0)
+print(r.randint(0,500))
+r.seed(0)
+print(r.randint(0,500))
+r.seed() 
+###let's shuffling a string
+name="ashik"
+l_n=list(name)
+r.shuffle(l_n)
+name=''.join(l_n)
+print(name)
+#shuffle second time 
+l_n=list(name)
+r.shuffle(l_n)
+name=''.join(l_n)
+print(name)
+
+
+#let's control shuffling by seed 
+name="ashik"
+l_n=list(name)
+r.seed(0)
+r.shuffle(l_n)
+name=''.join(l_n)
+print(name)
+
+name="ashik"
+l_n=list(name)
+r.seed(0)
+r.shuffle(l_n)
+name=''.join(l_n)
+print(name)
+r.seed() 
+
+
+#note: you can actually do the shuffle with the help of sample
+lis=[1,2,3,4,5]
+r.seed()  #when you need to clear seed value from others then just type it : 
+look_like_shuffle=r.sample(lis,len(lis))
+print(look_like_shuffle)
+
+#shuffle two python list at once with same order : 
+empName = ['Jhon', 'Emma', 'Kelly', 'Jason']
+empSalary = [7000, 6500, 9000, 10000]
+suf_both=list(zip(empName,empSalary))
+r.shuffle(suf_both)
+s_name,s_salary=zip(*suf_both)
+s_name,s_salary=list(s_name),list(s_salary)
+print(s_name,s_salary)
+
+#generate random float number with nth of precision
+print(round(r.uniform(0.1,5.0),5))
+print(round(r.uniform(0.1,5.0),3))
+print(round(r.uniform(0.1,5.0),9))