Python Basics


Comments
Operators
Variables & Data Types
Input, Indentation & Whitespaces
Comments
Comments
Comments
Comments
Comments
Comments
Comments
Comments
#print(“Kishore”)
#This is a comment.
print("Hello, World!") #This is a comment
""" This is a comment written in 
more than just one line """

Comparison Operators
print(10 >= 9)
print(10 == 9)
print(10 <= 9)
print(10 != 10)
a = 200
b = 333
if b > a:
  print("b is greater than a")

Output

True
False
False
False
b is greater than a

Variables & Data Types




Name = "kishore"	# Name is Variable & kishore is Value
Age = 35
Height = 5.6
Locations = [“Chennai", “Bangalore", “Goa"]
print(Name)
print(type(Name))
print(type(Age))
print(type(Height))
print(type(Locations))
print(bool())
print(bool(Age))
Casting = str(3)
print(type(Casting))

Output

kishore
class 'str'>
class 'int'>
class 'float'>
class 'list'>
False
True
class 'str'>

Input, Indentation & Whitespaces
name = input("Enter your name: ")
print("Hello,", name)

user_input = input("Enter something with spaces: ")
print("Original input:", repr(user_input))

# Removing leading/trailing whitespace
trimmed_input = user_input.strip()
print("Trimmed input:", repr(trimmed_input))

if b > a:
print("b is greater than a")

Output

Enter your name: kishore
Hello, kishore
Enter something with spaces: kumar     
Original input: 'kumar     '
Trimmed input: 'kumar'

IndentationError: expected an indented block after 'if' statement

Get only Names to List
ami_list =[]
for Images in In['Images']:
    #print(Images['CreationDate'])
    ami_list.append(Images['Name'])
print('ami_list',ami_list)
print(len(ami_list))

Output
ami_list ['Jenkins Master 2 Backup', 'AD-CCC-SAML-21-08-20-02-51-pm', 'AD-CCC-SAML-21-08-20-02-51-pm']
3

Get only CreationDate to List & Latest CreationDate
creation_dates = [image['CreationDate'] for image in In['Images']]
latest_creation_dates = max(creation_dates)
print('creation_dates',creation_dates)
print('latest_creation_dates',latest_creation_dates)

Output
creation_dates ['2021-09-20T05:25:47.000Z', '2023-08-21T09:21:31.000Z', '2022-08-21T09:21:31.000Z']
latest_creation_dates 2023-08-21T09:21:31.000Z

Get Latest Creation Image Dictionary
new = max(image['CreationDate'] for image in In['Images'] if image['Name'].startswith('AD-CCC-SAML'))
print('new',new)

# Step 1 TO Get Latest Creation Image Dictionary
filtered_images = [image for image in In['Images'] if image['CreationDate'] == new]
print('filtered_images',filtered_images)

# Step 2 TO Get Latest Creation Image Dictionary
for Images in In['Images']:
    if Images['CreationDate'] == new:
        print(Images)
    else :
        print('no')
		
Step 1 Output
filtered_images [{'Architecture': 'x86_64', 'CreationDate': '2023-08-21T09:21:31.000Z', 'ImageId': 'ami-0d4ba7e978aee7f42', 'ImageLocation': '750344256621/AD-CCC-SAML-21-08-20-02-51-pm', 'ImageType': 'machine', 'Public': False, 'OwnerId': '750344256621', 'Platform': 'windows', 'PlatformDetails': 'Windows', 'UsageOperation': 'RunInstances:0002', 'State': 'available', 'BlockDeviceMappings': [{'DeviceName': '/dev/sda1', 'Ebs': {'DeleteOnTermination': True, 'SnapshotId': 'snap-0857501855cca3b71', 'VolumeSize': 40, 'VolumeType': 'gp2', 'Encrypted': False}}], 'Description': 'AD-CCC-SAML-21-08-20-02-51-pm', 'EnaSupport': True, 'Hypervisor': 'xen', 'Name': 'AD-CCC-SAML-21-08-20-02-51-pm', 'RootDeviceName': '/dev/sda1', 'RootDeviceType': 'ebs', 'SriovNetSupport': 'simple', 'VirtualizationType': 'hvm', 'SourceInstanceId': 'i-0a0ef1bb1e35cfab8'}]

Step 2 Output
no
{'Architecture': 'x86_64', 'CreationDate': '2023-08-21T09:21:31.000Z', 'ImageId': 'ami-0d4ba7e978aee7f42', 'ImageLocation': '750344256621/AD-CCC-SAML-21-08-20-02-51-pm', 'ImageType': 'machine', 'Public': False, 'OwnerId': '750344256621', 'Platform': 'windows', 'PlatformDetails': 'Windows', 'UsageOperation': 'RunInstances:0002', 'State': 'available', 'BlockDeviceMappings': [{'DeviceName': '/dev/sda1', 'Ebs': {'DeleteOnTermination': True, 'SnapshotId': 'snap-0857501855cca3b71', 'VolumeSize': 40, 'VolumeType': 'gp2', 'Encrypted': False}}], 'Description': 'AD-CCC-SAML-21-08-20-02-51-pm', 'EnaSupport': True, 'Hypervisor': 'xen', 'Name': 'AD-CCC-SAML-21-08-20-02-51-pm', 'RootDeviceName': '/dev/sda1', 'RootDeviceType': 'ebs', 'SriovNetSupport': 'simple', 'VirtualizationType': 'hvm', 'SourceInstanceId': 'i-0a0ef1bb1e35cfab8'}
no

Check Latest Date String
a = '2022-08-20T05:21:47.000Z'
b = '2022-08-22T05:21:47.000Z'
if a > b:
    print('a greater')
elif a < b:
    print('b greater')
else:
    print('a = b')
	
Output
b greater

Get 'b'List non matching numbers from 'a'List
a = [2,3,4,5,6,7,8,9,0]
b = [0,12,4,6,242,7,9]
for x in (x for x in b if x not in a):
    print(x)
	
Output
12
242

Compare Both Lists and Get matching values
a = [2,3,4,5,6,7,8,9,0]
xyz = [0,12,4,6,242,7,9]
for x in filter(lambda w: w in a, xyz):
  print (x)
  
Output
0
4
6
7
9