Devops python task #1

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ripon1995 wants to merge 20 commits into bongodev:main from ripon1995:devops-python-task

.gitignore

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+    .ruff_cache/
+    .pre-commit-config.yaml
+    *.log
+    tskops-venv/
+    __pycache__/

.pre-commit-config.yaml

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+    repos:
+    -   repo: https://github.com/pre-commit/pre-commit-hooks
+        rev: v4.5.0
+        hooks:
+        -   id: trailing-whitespace
+        -   id: end-of-file-fixer
+        -   id: check-yaml
+        -   id: check-added-large-files
+    -   repo: https://github.com/astral-sh/ruff-pre-commit
+        # Ruff version
+        rev: v0.1.6
+        hooks:
+          # Run the linter
+          - id: ruff
+            args: [ --fix ]
+          # Run the formatter
+          - id: ruff-format

Python-tasks/Task-1/Task_01_Domain_Extractor/Problem_01.txt

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+    Scenario: You have a list of web URLs.
+    Goal: Create a script that takes the URL https://api.github.com/v3 and uses slicing or .split() to extract just the domain name (github.com).
+    DevOps Value with this task: Parsing logs to see which external services your app is calling.

Python-tasks/Task-1/Task_01_Domain_Extractor/solution_01.py

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+    urls = [
+        "https://api.github.com/v3",
+        "https://scholar.google.com/",
+        "https://www.jstor.org/",
+        "https://www.sciencedirect.com/check/",
+        "https://www.researchgate.net/test.test/",
+        "https://www.researchgate.net/v1/v2",
+    ]
+    domains = []
+    for url in urls:
+        path = url.split("//")[-1].split("/")[0]
+        parts = path.split(".")[1:]
+        domain = ".".join(parts)
+        domains.append(domain)
+    print(*domains, sep="\n")

Python-tasks/Task-1/Task_02_Safe_name/Problem_02.txt

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+    Task 2: The "Safe Name" Sanitizer (Strings)
+    Scenario: A user wants to create a cloud bucket named My Project Backup . Cloud providers don't allow spaces or uppercase.
+    Goal: Use string methods to:
+    - Strip whitespace.
+    - Replace spaces with hyphens.
+    - Convert to lowercase.
+    DevOps Value with this task: Standardizing resource names in Terraform/Cloud scripts.

Python-tasks/Task-1/Task_02_Safe_name/solution_02.py

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+    bucket_name = "My Project Backup"
+    # strip string
+    bucket_name = bucket_name.strip()
+    # split and lowercase conversion
+    bucket_name = bucket_name.lower().split(" ")
+    # join with hyphen
+    bucket_name = "-".join(bucket_name)
+    print(bucket_name)

Python-tasks/Task-1/Task_03_Port_Validator/Problem_03.txt

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+    Task 3: The Port Validator (Integers & Logic)
+    Scenario: A firewall script receives a port as a string "8080".
+    Goal: Convert the string to an integer and check if it is within the valid range (1–65535). Print "Valid" or "Invalid".
+    DevOps Value with this task: Input validation for automation tools.

Python-tasks/Task-1/Task_03_Port_Validator/solution_03.py

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+    port = "8080"
+    # convert string to int
+    port_number = int(port)
+    # check port validity
+    if port_number >= 1 and port_number <= 65535:
+        print("Valid")
+    else:
+        print("Invalid")

Python-tasks/Task-1/Task_04_Fleet_Inventory/Problem_04.txt

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+    Task 4: The Fleet Inventory (Lists)
+    Scenario: You have a list: servers = ["web01", "db01", "app01", "web02"].
+    Goal: Use slicing to create a new list called web_servers containing only the first and last elements of the original list.
+    DevOps Value with this task: Managing subsets of infrastructure (e.g., "only update the first 50% of nodes").

Python-tasks/Task-1/Task_04_Fleet_Inventory/solution_04.py

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+    servers = ["web01", "db01", "app01", "web02", "web03"]
+    # get the first and last slice
+    web_servers = servers[:1] + servers[-1:]
+    print(web_servers)

Python-tasks/Task-1/Task_05_Cloud_Config_Mapper/Problem_05.txt

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+    Task 5: The Cloud Config Mapper (Dictionaries)
+    Scenario: Create a dictionary representing a Virtual Machine with keys: id, ip, status, and region.
+    Goal: Write a script that updates the status from "running" to "stopped" and adds a new key called instance_type with the value "t3.large".
+    DevOps Value with this task:: Mimicking JSON responses from AWS/Azure/GCP APIs.

Python-tasks/Task-1/Task_05_Cloud_Config_Mapper/solution_05.py

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+    vm = {
+        "id": "virtual machine 1",
+        "ip": "222.222.222.222",
+        "status": "running",
+        "region": "asia-west",
+    }
+    vm["status"] = "stopped"
+    vm.update({"instance_type": "t3.large"})
+    print(vm)

Python-tasks/Task-1/Task_06_Log_File_Duplicator/Problem_06.txt

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+    Task 6: The Log File Duplicator (OS & Shutil)
+    Scenario: You need to test a new log-parsing script without ruining the original files.
+    Goal: Write a script that looks for a file named app.log and creates 5 copies of it named app_1.log, app_2.log, etc.
+    DevOps Value with this task:: Generating "mock data" for testing pipelines.

Python-tasks/Task-1/Task_06_Log_File_Duplicator/solution_06.py

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+    import shutil
+    source_file = "app.log"
+    for i in range(1, 6):
+        destination = f"app_{i}.log"
+        shutil.copy(source_file, destination)
+        print(f"Created: {destination}")

Python-tasks/Task-1/Task_07_The_Prod_Guard/Problem_07.txt

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+    Task 7: The "Prod" Guard (Booleans & Conditionals)
+    Scenario: A script is about to delete data.
+    Goal: Create a variable env = "production". Write an if statement that only prints "Executing Delete" if env is NOT equal to "production". Otherwise, print "Access Denied: Cannot delete in Prod!"
+    DevOps Value with this task:: Implementing safety "gates" in CI/CD pipelines.

Python-tasks/Task-1/Task_07_The_Prod_Guard/solution_07.py

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+    env = "production"
+    if env != "production":
+        print("Executing Delete")
+    else:
+        print("Access Denied: Cannot delete in Prod!")

Python-tasks/Task-1/Task_08_The_Theshold_Alert/Problem_08.txt

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+    Task 8: The Threshold Alert (Floats & Strings)
+    Scenario: Your monitoring tool returns a CPU load of 0.88.
+    Goal: Format this float as a percentage string (e.g., "88%") using f-strings.
+    DevOps Value with this task: Creating human-readable alerts for Slack or Email.

Python-tasks/Task-1/Task_08_The_Theshold_Alert/solution_08.py

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		cpu_load = 0.88
		print(f"Current cpu load : {int(cpu_load*100)}%")

Python-tasks/Task-1/Task_09_The_Path_Builder/Problem_09.txt

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+    ask 9: The Path Builder (Pathlib/OS)
+    Scenario: You are working on a script that must run on both Windows and Linux.
+    Goal: Use os.path.join to combine the variables base_dir = "/var/log", app_name = "nginx", and filename = "access.log" into one valid path.
+    DevOps Value with this task: Avoiding "Hardcoded Path" bugs.

Python-tasks/Task-1/Task_09_The_Path_Builder/solution_09.py

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+    import os
+    base_dir = "/var/log"
+    app_name = "nginx"
+    filename = "access.log"
+    path = os.path.join(base_dir, app_name, filename)
+    print(path)

Python-tasks/Task-1/Task_10_The_Secret_Masker/Problem_10.txt

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+    Task 10: The Secret Masker (Slicing)
+    Scenario: You accidentally printed an API Key to the console: AKIA1234567890EXAMPLE.
+    Goal: Use slicing to print only the first 4 characters followed by asterisks (e.g., AKIA**********).
+    DevOps Value with this task: Security and compliance in logging.

Python-tasks/Task-1/Task_10_The_Secret_Masker/solution_10.py

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+    SECRET_KEY = "AKIA1234567890EXAMPLE"
+    encrypted_secret_key = SECRET_KEY[:4] + (len(SECRET_KEY) - 4) * "*"
+    print(encrypted_secret_key)

Python-tasks/task-1.md → Python-tasks/Task-1/task-1.md

            
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    --------

    ### Task 1: The Domain Extractor (Slicing & Strings)

    **Scenario:** You have a list of web URLs. 

    **Scenario:** You have a list of web URLs.

    **Goal:** Create a script that takes the URL `https://api.github.com/v3` and uses **slicing** or `.split()` to extract just the domain name (`github.com`). 

    **Goal:** Create a script that takes the URL `https://api.github.com/v3` and uses **slicing** or `.split()` to extract just the domain name (`github.com`).

    **DevOps Value with this task:** Parsing logs to see which external services your app is calling.

    ### Task 2: The "Safe Name" Sanitizer (Strings)

    **Scenario:** A user wants to create a cloud bucket named `My Project Backup` . Cloud providers don't allow spaces or uppercase. 

    **Scenario:** A user wants to create a cloud bucket named `My Project Backup` . Cloud providers don't allow spaces or uppercase.

    **Goal:** Use string methods to: 

    1. Strip whitespace. 

    2. Replace spaces with hyphens. 

    3. Convert to lowercase. 

    **Goal:** Use string methods to:

    1. Strip whitespace.

    2. Replace spaces with hyphens.

    3. Convert to lowercase.

    **DevOps Value with this task:** Standardizing resource names in Terraform/Cloud scripts.

    ### Task 3: The Port Validator (Integers & Logic)

    **Scenario:** A firewall script receives a port as a string `"8080"`. 

    **Scenario:** A firewall script receives a port as a string `"8080"`.

    **Goal:** Convert the string to an integer and check if it is within the valid range (1–65535). Print "Valid" or "Invalid". 

    **Goal:** Convert the string to an integer and check if it is within the valid range (1–65535). Print "Valid" or "Invalid".

    **DevOps Value with this task:** Input validation for automation tools.

    ### Task 4: The Fleet Inventory (Lists)

    **Scenario:** You have a list: `servers = ["web01", "db01", "app01", "web02"]`. 

    **Scenario:** You have a list: `servers = ["web01", "db01", "app01", "web02"]`.

    **Goal:** Use **slicing** to create a new list called `web_servers` containing only the first and last elements of the original list. 

    **Goal:** Use **slicing** to create a new list called `web_servers` containing only the first and last elements of the original list.

    **DevOps Value with this task:** Managing subsets of infrastructure (e.g., "only update the first 50% of nodes").

    ### Task 5: The Cloud Config Mapper (Dictionaries)

    **Scenario:** Create a dictionary representing a Virtual Machine with keys: `id`, `ip`, `status`, and `region`. 

    **Scenario:** Create a dictionary representing a Virtual Machine with keys: `id`, `ip`, `status`, and `region`.

    **Goal:** Write a script that updates the `status` from `"running"` to `"stopped"` and adds a new key called `instance_type` with the value `"t3.large"`. 

    **Goal:** Write a script that updates the `status` from `"running"` to `"stopped"` and adds a new key called `instance_type` with the value `"t3.large"`.

    **DevOps Value with this task::** Mimicking JSON responses from AWS/Azure/GCP APIs.

    ### Task 6: The Log File Duplicator (OS & Shutil)

    **Scenario:** You need to test a new log-parsing script without ruining the original files. 

    **Scenario:** You need to test a new log-parsing script without ruining the original files.

    **Goal:** Write a script that looks for a file named `app.log` and creates 5 copies of it named `app_1.log`, `app_2.log`, etc. 

    **Goal:** Write a script that looks for a file named `app.log` and creates 5 copies of it named `app_1.log`, `app_2.log`, etc.

    **DevOps Value with this task::** Generating "mock data" for testing pipelines.

    ### Task 7: The "Prod" Guard (Booleans & Conditionals)

    **Scenario:** A script is about to delete data. 

    **Scenario:** A script is about to delete data.

    **Goal:** Create a variable `env = "production"`. Write an `if` statement that only prints "Executing Delete" if `env` is NOT equal to "production". Otherwise, print "Access Denied: Cannot delete in Prod!" 

    **Goal:** Create a variable `env = "production"`. Write an `if` statement that only prints "Executing Delete" if `env` is NOT equal to "production". Otherwise, print "Access Denied: Cannot delete in Prod!"

    **DevOps Value with this task::** Implementing safety "gates" in CI/CD pipelines.

    ### Task 8: The Threshold Alert (Floats & Strings)

    **Scenario:** Your monitoring tool returns a CPU load of `0.88`. 

    **Scenario:** Your monitoring tool returns a CPU load of `0.88`.

    **Goal:** Format this float as a percentage string (e.g., `"88%"`) using **f-strings**. 

    **Goal:** Format this float as a percentage string (e.g., `"88%"`) using **f-strings**.

    **DevOps Value with this task:** Creating human-readable alerts for Slack or Email.

    ### Task 9: The Path Builder (Pathlib/OS)

    **Scenario:** You are working on a script that must run on both Windows and Linux. 

    **Scenario:** You are working on a script that must run on both Windows and Linux.

    **Goal:** Use `os.path.join` to combine the variables `base_dir = "/var/log"`, `app_name = "nginx"`, and `filename = "access.log"` into one valid path. 

    **Goal:** Use `os.path.join` to combine the variables `base_dir = "/var/log"`, `app_name = "nginx"`, and `filename = "access.log"` into one valid path.

    **DevOps Value with this task:** Avoiding "Hardcoded Path" bugs.

    ### Task 10: The Secret Masker (Slicing)

    **Scenario:** You accidentally printed an API Key to the console: `AKIA1234567890EXAMPLE`. 

    **Scenario:** You accidentally printed an API Key to the console: `AKIA1234567890EXAMPLE`.

    **Goal:** Use slicing to print only the first 4 characters followed by asterisks (e.g., `AKIA**********`). 

    **Goal:** Use slicing to print only the first 4 characters followed by asterisks (e.g., `AKIA**********`).

    **DevOps Value with this task:** Security and compliance in logging.

    ---------CHEERS!--------
      
    ---------CHEERS!--------

Python-tasks/Task-2/Task_01_The_Logic_Master_FizzBuzz/Problem_01.txt

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+    Objective: Master conditional logic and loops.
+    Requirements:
+    Create a function named fizzbuzz_checker(limit).
+    The function should use a for loop to iterate from 1 to the limit.
+    Logic Rules:
+    If the number is divisible by both 3 and 5, print "FizzBuzz".
+    If divisible by 3, print "Fizz".
+    If divisible by 5, print "Buzz".
+    Otherwise, just print the number itself.

Python-tasks/Task-2/Task_01_The_Logic_Master_FizzBuzz/solution_01.py

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+    def fizzbuzz_checker(limit):
+        for i in range(1, limit + 1):
+            if i % 3 == 0 and i % 5 == 0:
+                print("FizzBuzz")
+            elif i % 3 == 0:
+                print("Fizz")
+            elif i % 5 == 0:
+                print("Buzz")
+            else:
+                print(i)
+    fizzbuzz_checker(15)

Python-tasks/Task-2/Task_02_The_Security_AuditorSafe_name/Problem_02.txt

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+    Objective: Practice cross-file imports and using immutable data types.
+    Requirements:
+    Create scanner.py (The Module):
+    Define a Tuple named DANGEROUS_PORTS containing (21, 23, 445).
+    Create a function check_ports(active_ports) that loops through a list and prints a warning if a port is found in your DANGEROUS_PORTS tuple.
+    Create app.py (The Execution Script):
+    Import the scanner module.
+    Define a list of ports: [22, 80, 21, 443, 23, 8080].
+    Call the function from your module to audit the list.

Python-tasks/Task-2/Task_02_The_Security_AuditorSafe_name/app.py

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+    from scanner import check_ports
+    ports = [22, 80, 21, 443, 23, 8080]
+    check_ports(ports)

Python-tasks/Task-2/Task_02_The_Security_AuditorSafe_name/scanner.py

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+    DANGEROUS_PORTS = (21, 23, 445)
+    def check_ports(active_ports):
+        for port in active_ports:
+            if port in DANGEROUS_PORTS:
+                print(f"Dangerous port found: {port}")

Python-tasks/Task-2/Task_03_The_System_Health_Check/Problem_03.txt

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+    Objective: Safely handle external data strings using json and try/except.
+    Requirements:
+    Create a function process_server_data(json_string).
+    Inside the function, use json.loads() to parse the input.
+    Wrap the parsing logic in a try/except block to catch json.JSONDecodeError.
+    If successful, loop through the resulting list of servers and print the status of each.
+    Test Data:
+    Use this string to test your function:
+    mock_api = '{"servers": [{"name": "web-01", "status": "up"}, {"name": "db-01", "status": "down"}]}'

Python-tasks/Task-2/Task_03_The_System_Health_Check/solution_03.py

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+    import json
+    def process_server_data(json_string):
+        try:
+            res = json.loads(json_string)
+            servers = res["servers"]
+            for server in servers:
+                print(f"server => {server['name']} & status => {server['status']}")
+        except json.JSONDecodeError as e:
+            print(f"Error found => {str(e)}")
+    mock_api = '{"servers": [{"name": "web-01", "status": "up"}, {"name": "db-01", "status": "down"}]}'
+    process_server_data(mock_api)

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