update

Author: pythonashwani

10_0_comandLine.py

@@ -1,21 +1,21 @@
-# python ./10_0_comandLine.py  1 2 3
+# python3 ./10_0_comandLine.py  1 2 3
 import sys
 
 # total arguments
 n = len(sys.argv)
 print("Total arguments passed:", n)
 
 # Print all command line arguments
-print("Arguments Passed:", sys.argv)
+print("Arguments Passed:", sys.argv) # ['10_0_comandLine.py', '1', '2', '3']
 
 # Print the Script Name
-print("Script Name:", sys.argv[0])
+print("Script Name:", sys.argv[0]) # 10_0_comandLine.py
 
 # Print First Argument
-print("First Argument:", sys.argv[1])
+print("First Argument:", sys.argv[1]) # 1
 
 # Print Second Argument
-print("Second Argument:", sys.argv[2])
+print("Second Argument:", sys.argv[2]) # 2
 
 # Print Third Argument
-print("Third Argument:", sys.argv[3])
+print("Third Argument:", sys.argv[3]) # 3

10_1_comandLine.py

@@ -1,6 +1,10 @@
 # python ./10_1_comandLine.py  1 add 3
 # python ./10_1_comandLine.py  9 sub 3
 # python ./10_1_comandLine.py  6 mult 3
+# alias calc="python3 ./10_1_comandLine.py"
+# calc 1 add 3
+# calc 9 sub 3
+# calc 6 mult 3
 import sys
 
 num1 = int(sys.argv[1])
@@ -17,4 +21,4 @@
     output = num1 * num2
     print(output)
 else: 
-    print("Please give the correct operator, it is add, sub, multi")
+    print("Please give the correct operator, Any one( add, sub, multi)")

4_Dataypes_1_string.py

@@ -1,9 +1,14 @@
 str = "HELLO"  # immutable (can't be changebale)
+# H E L L O
+# 0 1 2 3 4
+print(str) # HELLO
 print(str[2])  # L
 print(str[2:5])  # LLO
+print(str[0:4])  # HELL
 #str[0] = "h"  # TypeError: 'str' object does not support item assignment
 print(str)
 str1 = "Python"
 print(str1)
 del str1
-print(str1) # NameError: name 'str1' is not defined. Did you mean: 'str'?
+print(str1) # NameError: name 'str1' is not defined. Did you mean: 'str'?
+print(a) # NameError: name 'a' is not defined

4_Dataypes_2_string_operator.py

@@ -1,11 +1,11 @@
-str = "Hello"
+str = "Hello "
 str1 = " world"
-print(str*3)  # HelloHelloHello
-print(str+str1)  # Hello world
+print(str*3)  # Hello Hello Hello
+print(str+str1)  # Hello  world
 print(str[4])  # o
 print(str[2:4])  # ll
 print('w' in str)  # false as w is not present in str
 print('wo' not in str1)  # false as wo is present in str1.
-print("C:\\python37")  # C://python37 as it is written
-print(r"C:\\python37")  # C://python37 as it is written
+print("C:\\python37")  # C:\python37 as it is written
+print(r"C:\\python37")  # C:\\python37 as it is written
 print("%s string str : %s" % (str,"welcome"))  # prints Hello string str : welcome

4_Dataypes_3_boolean

@@ -1,3 +1,6 @@
+a = 1
+b = 1
+x = (a == b)
 x = (1 == True)
 y = (2 == False)
 z = (3 == True)
@@ -15,4 +18,5 @@ print("p:", p)
 p = '' == False
 print("p:", p)
 p = 1 == True
-print("p:", p)
+print("p:", p)
+

6_Slicing.py

@@ -1,4 +1,6 @@
 planet1="Closest of Sun"
+# C l o s e s t   o f    S  u  n
+# 0 1 2 3 4 5 6 7 8 9 10 11 12 13
 print(planet1)
 """
 print(planet1[0]) # C
@@ -10,21 +12,21 @@
 print(planet1[-3]) # S
 
 # Slicing a string, get a substring from a string
-print(planet1[1:4])
-print(planet1[:])
-print(planet1[:7])
-print(planet1[11:])
+print(planet1[1:4]) # los
+print(planet1[:])  # Closest of Sun
+print(planet1[:7]) # Closest
+print(planet1[11:]) # Sun
 
 # Slicing Tuple
 devops=("Linux", "Vagrant", "Bash Scripting", "AWS", "Jenkins", "Python", "Ansible")
 print(devops[0])
 print(devops[4])
 print(devops[-1])
 
-print(devops[2:5])
-print(devops[2:5][0])
+print(devops[2:5]) #   ('Bash Scripting', 'AWS', 'Jenkins')
+print(devops[2:5][0]) # Bash Scripting
 
-print(devops[2:5][0][5:11])
+print(devops[2:5][0][5:11]) # Script
 print(devops[2:5][0][5:11][-1])
 
 # Slicing List
@@ -41,14 +43,16 @@
 print(devops[2:5][0][5:11])
 print(devops[2:5][0][5:11][-1])
 
-
+"""
 # Dictionary Example
-Skills = {"DevOps": ("AWS", "Jenkins", "Python", "Ansible"), "Development": ["Java", "NodeJS", ".net"]}
-print(Skills)
-print(Skills["DevOps"])
-print(Skills["Development"])
+Skills = {
+            "DevOps": ("AWS", "Jenkins", "Python", "Ansible"), 
+            "Development": ["Java", "NodeJS", ".net"]
+        }
+print(Skills) # {'DevOps': ('AWS', 'Jenkins', 'Python', 'Ansible'), 'Development': ['Java', 'NodeJS', '.net']}
+print(Skills["DevOps"]) # ('AWS', 'Jenkins', 'Python', 'Ansible')
+print(Skills["Development"]) # ['Java', 'NodeJS', '.net']
 
-print(Skills["DevOps"][-1])
-print(Skills["DevOps"][-1][:3])
+print(Skills["DevOps"][-1]) # Ansible
+print(Skills["DevOps"][-1][:3]) # Ans
 
-"""

7_Operators.py

@@ -59,23 +59,23 @@
 
 # Logical Operators
 
-# and
-# or
-
+# and - must be true
+# or - any one true
+'''
 a = 40
 b = 60
 
 x = 2
 y = 3
-
+print('* ' * 10)
 out = (a < b) or (x > y)
-print(out)
+print(out) # True
 
 out = (a > b) or (x < y)
-print(out)
+print(out) # True
 
 out = (a > b) or (x > y)
-print(out)
+print(out) 
 
 out = (a > b) and (x < y)
 print(out)
@@ -108,17 +108,23 @@
 result = a is not b
 print(result)
 
-'''
-'''
+print('#'  * 10)
+
 a = 100
 p = a << 2
+print(p)
 p = a >> 2
-64 32 16 8 4 2 0
-1  1  0  0 1 0 0
-0  0  1  0 0 0 0 = 16
-0  0  1  1 0 0 1 = 24
+print(p)
+'''
+
+256	128	64	32	16	8	4	2	1			
+0	0	1	1	0	0	1	0	0		100	
+1	1	0	0	1	0	0	0	0		100<<2	400(=256+128+16)
+0	0	0	0	1	1	0	0	1		100>>2	25 (=16+8+1)
+
 
 
 z = 10 + 2 * 3 - 4 / 2 + 1
 print(z)
-'''
+'''
+

8_0_Conditions.py

@@ -1,20 +1,20 @@
 # IF Condition
-"""
+
 x = 21
 
 if x < 30:
     print("Inside IF block")
     print("X is less than 30")
 
-print("Rest of the code.")
+print("Rest of the code.*****")
 
 x = 31
 
 if x < 30:
     print("Inside IF block")
     print("X is less than 30")
 
-print("Rest of the code.")
+print("Rest of the code.####")
 
 
 # If/Else Condition
@@ -26,8 +26,8 @@
 else:
     print("Inside else block")
     print("x is greater than 30")
+print("Rest of the code.@@@")
 
-"""
 # If/Elif/Else Condition
 x = 40
 

8_1_Condition_vars.py

@@ -5,7 +5,6 @@
 print("This IT Organization has various skill sets.")
 print("Find out your match.")
 
-print("Enter Capitalised Values: ")
 
 DevOps = ["Jenkins", "Ansible", "Bash", "Python", "Puppet", "Dockers", "Kubernetes", "Terraform"]
 Development = ("Nodejs", "Angularjs", "Java", ".net", "Python")
@@ -24,4 +23,4 @@
     print(f"We have contract employees with {usr_skill} skill.")
 else:
     print("Skill not found")
-    print("Please check if you have entered value in capitalize or check the spelling.")
+    print("Please check the spelling.")

9_0_Loops.py

@@ -11,12 +11,31 @@
 for vac in VACCINES:
     print(f"{vac} vaccine provides Immunization against covid19")
 
+print('*' *30)
+# Python program to show how the for loop works  
+
+# Creating a sequence which is a tuple of numbers  
+numbers = [4, 2, 6, 7, 3, 5, 8, 10, 6, 1, 9, 2]  
+
+# variable to store the square of the number  
+square = 0  
+
+# Creating an empty list  
+squares = []  
+
+# Creating a for loop  
+for value in numbers:  
+    square = value ** 2  
+    squares.append(square)  
+
+print("The list of squares is", squares)  
+
 """
 # While Loop
 x = 0
 while x <= 10:
     print("Value of X is:", x)
     print("Looping")
-    x+=1
+    x=x+1
 
-print("Rest of the code.")
+print("Rest of the code.")