Python Tutorial - Angka Random - 012

Hal umum. Python melakukan generating untuk data data random, apakah itu untuk tujuan simulasi, testing dan gaming. 

Image - Ayam Turkey salai

Fungsi "random()" menghasilkan angka diantara 0 dan 1, seperti [0, 0.1 .... 1].

Generating a random float antara 0 dan 1

from random import random

print(random())

output: 0.332587482267

Angka integer antara 1 dan 100

from random import randint

print(randint(1, 100))

Output : 55

Storing Integer di variabel

from random import randint

number = randint(1, 100)

print(number)

Output: 26

Angka Random Float antara 1 dan 10

Kita bisa memakai Fungsi "uniform()"

from random import uniform

print(uniform(1, 10))

Output : 9.7811

Manipulasi Lists dengan Randomness

from random import shuffle

numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

shuffle(numbers)

print(numbers)

Output: [5, 1, 4, 10, 7, 9, 6, 3, 8, 2]

Menyeleksi Hal Random dari List

from random import sample

numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

single_item = sample(numbers, 1)[0]

print(single_item)

Output: 8

multiple_items = sample(numbers, 4)

print(multiple_items)

[7, 5, 10, 4]

Lists mengandung Strings

from random import sample

names = ['Alissa', 'Alice', 'Marco', 'Melissa', 'Sandra', 'Steve']

single_name = sample(names, 1)[0]  # Picks one random name from the list.

print(single_name)

Output: Alissa

multiple_names = sample(names, 4)

print(multiple_names)

Output: ['Alice', 'Marco', 'Steve', 'Melissa']

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Python Tutorial - Casting - 011

Bahasa Python bisa mengenal type type data apakah itu type data integer atau string secara otomatis. 

Image - Hanya Ilustrasi saja

Hanya contoh: x = 3 adalah intiger, sedangkan y = "text" adalah string. 

Casting Data

x = 3

y = 2.153

Print("We have defined two numbers")

print("x = " + str (x))....>wrong

print("y = " + str (y))....> Wrong

Output: error

Correction of program

Print("We have defined two numbers")

print("x = ", x)

print("y = ", y)

Output:

We have defined two numbers

('x =', 3)

('y =', 2.153)

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Data Engineering - Microsoft Certificates

"Data engineers focus on designing, building, and maintaining data pipelines and infrastructure. They ensure that data is collected, processed, and made available for analysis."

Image 01 - Data Engineering (credit: Google)

Skills Needed:

- Proficiency in programming languages (e.g., Python, Java, Scala).

- Knowledge of databases (SQL and NoSQL).

- Experience with cloud platforms (e.g., Azure, AWS, Google Cloud).

- Understanding of data modeling, ETL (Extract, Transform, Load) processes, and data warehousing.

# Common tools for extraction include SQL queries, custom scripts, and ETL tools like Apache NiFi, Talend, or Informatica.

Image 02 - Goreng ikan, ilustrasi

Certificates (Courses)

1) Microsoft Certified: Azure Data Fundamentals (DP 900):

- Microsoft Certified: Azure Data Fundamentals - Certifications | Microsoft Learn

2) Intermediate learning (DP 203):

- Get started with data engineering on Azure - Training | Microsoft Learn

3) Google vs IBM Data Engineer Certificate - BEST Certificate for Data Engineers - YouTube

- Google is specific than IBM is broader.

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Python Tutorial - Dictionary - 010

Dictionary adalah seperangkat nilai (set of value) yang tidak beraturan dalam sepasang kurung: { } 

Image - Bumbu Nasi Goreng

Angka integer (angka 1, 2, 3....) and string (kata, halo, apa kabar dsb) bisa dipakai dalam index dictionary. 

Dictionary sederhana:

words = { }

words["Hello"] = "Bonjour"

words["Yes"] = "Oui"

words["No"] = "Non"

words["Bye"] = "Au Revoir"

print(words["Hello"])

Output = Bonjour

print(words["No"])

Output = Non

Limited to single word definitions

dict = { }

dict["Ford"] = "Car"

dict["Python"] = "The Python Programming Language"

dict[2] = "This sentence is stored here"

print(dict["Ford"])

Output : Car

print(dict["Python"])

Output: The Python Programming Language

print(dict["2"])

Output: The Python Programming Language ....> salah

Note: code ["2"]), diganti menjadi [2])

print(dict[2])

Output: This sentence is stored here

Manipulating the Dictionary

words = {}

words["Hello"] = "Bonjou"

words["Yes"] = "Oui"

words["No"] = "Non"

words["Bye"] = "Au Revoir"

print(words)

Output: {'Hello': 'Bonjou', 'Yes': 'Oui', 'No': 'Non', 'Bye': 'Au Revoir'}

del words["yes"]

print(words)

words["yes"] = "Oui"

print(words)

# Previous postings:

- Up Grade Live: Python Basics - Expressions dan Variables - Module 1 - Part 2

- Up Grade Live: Python Basics - Operasi Strings - Module 1 - Part 3

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Python Tutorial - Tuple - 009

Tuple adalah struktur data penting dalam Python, digunakan untuk menyimpan koleksi data yang relevan. 

Image - Bunga Tulip, hanya ilustrasi. 

Perbedaan antara Tuple dan List bahwa Tuple setelah dikreasi tetap seperti itu, tidak berubah.

Mengakses Tuple data.

Seperti list, Tuple adalah index:

    personInfo = ("Diana", 32, "New York")

    print(personInfo[0])

Output: Diana

    print(personInfo[1])

Output: 32

Tuple bisa melakukan operasi beberapa variabel secara bersamaan:

name, age, country, career = ("Diana", 32, "Canada", "CompSci")

print(country)

Output: Canada

Modifikasi Tuple.

Meskipun anda tidak bisa mengubah content Tuple, tapi anda bisa menambah dua Tuples dengan operator: +

x = (3,4,5,6)

x = x + (1,2,3)

print(x)

Output: (3, 4, 5, 6, 1, 2, 3)

# Previous postings:

- Up Grade Live: Python Basics - Module 1 - Part 1

- Up Grade Live: Python Basics - Expressions dan Variables - Module 1 - Part 2

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Sofware Testing Tutorial

 Software testing adalah salah satu lapangan kerja yang sedang trending dengan gaji yang cukup lumayan besar.

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Hanya sekedar pengantar, anda bisa mengetahui apa itu Software Testing melalui beberapa website ini:

1) Software testing untuk pemula:

- Software Testing Tutorials for Beginners - YouTube

2) Software testing tutorial fundamental, sebelum latihan proyek/praktek: 

- Software Testing Tutorial (guru99.com)

3) Proyek/praktek software testing:

- Live Manual Testing Project: Online Software Testing Practice (guru99.com)

4) Automation testing:

- Life Cycle of Automation Testing | Automation Testing Tutorial for Beginners | Day 1 - YouTube

Info dari Linkedin:

"The software testing field is becoming increasingly popular, which means there is a lot of competition for jobs. With so many applicants, it can be tough to stand out from the crowd. This is especially true for junior testers, who may not have as many accomplishments or accolades to highlight on their resumes. 

To overcome this obstacle, focus on developing your unique skills and strengths. Consider taking courses or certifications that will help you stand out from other candidates. For example, you might focus on learning a particular testing methodology, such as Agile or DevOps, or specialize in a particular area of testing, such as automation or performance testing. By showcasing your unique skills and expertise, you can differentiate yourself from other candidates and increase your chances of landing a job."

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- Up Grade Live: 10 Mata Kuliah Untuk Menjadi Seorang Data Scientist

- Up Grade Live: Python Basics - Module 1 - Part 1 

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Python Tutorial - Range - 008

Fungsi range adalah hal umum dipakai dalam bahasa Python. Dipakai untuk menghasikan deretan angka berdasarkan parameter khusus. 

Image - Ruko di kota kecil Amerika

range(start, stop, step)

start, stop, step .....> disebut parameter

Parameter start .....> starting value .....> default value is 0 (zero)

Parameter stop .....> upper limit

Parameter step .....> interval between numbers ....> default value is 1

# range(0,5)

Note: To make the code range(0,5) work, you can convert it to a list. In Python, the range() function generates a sequence of numbers, but it doesn’t create a list directly. To create a list containing the numbers from 0 to 4, you can use the list() function to convert the range to a list:

>>> my_list = list(range(0, 5))

>>> print(my_list)

[0, 1, 2, 3, 4]

>>> 

# range(1,6)

my_list = list(range(0,6))

print(my_list)

output : [0, 1, 2, 3, 4, 5]

# range(6, 0, -1)

result = list(range(6, 0, -1))

print(result)

output: [6, 5, 4, 3, 2, 1]

# range(0, -10, -2)

badut = list(range(0, -10, -2))

print(badut)

Output: no output

## Posting sebelumnya:

- Up Grade Live: 10 Mata Kuliah Untuk Menjadi Seorang Data Scientist

- Up Grade Live: Python Basics - Module 1 - Part 1

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Python Tutorial - Loop - 007

Untuk kondisi khusus, eksekusi code bisa diulang (repeat), untuk itu Python menyediakan mekanisme yang disebut "loop." 

Image - Di pedesaan, ilustrasi.

Struktur loop dalam Python adalah: for, while dan nested loops.

Loop "for" dipakai untuk pengulangan "objects" seperti lists, strings dan tuples.

items = ["agus", "benu", "cica", "deli"]

for item in items:

    print(item)

Output: 

agus

benu

cica

deli

>>> 

Using "range"

range() function to make easy to make repeatition

for i in range(1, 10):

print(i)

output:

1

2

3

4

5

6

7

8

9

>>> 

Loop "While"

correctNumber = 5
guess = 0

while guess != correctNumber:
    guess = int(input("Guess the number: "))

    if guess != correctNumber:
        print('False guess')
print('You guessed the correct number')
Note : No output


Nested Loops
for x in range(1, 10):
	for y in range(1, 10):
	print("(" + str(x) + "," + str(y) + ")")
	
SyntaxError: expected an indented block

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Python Tutorial - Scope - 006

Pada posting lalu kita bicara soal variabel lokal dan variabel general. Nah, dua variabel ini disebut variable, berdasarkan scope yang kita bicarakan.

Image - Jalan desa di Amerika.

Contoh Python Scope

# The code will not work

def f(x,y):

    print('you called f(x,y) with the value x = ' + str(x) + ' and y = ' + str(y))

    print('x + y = ' + str(x*y))

    z = 4 # z is lokal

z = 3

f(3,2)

# Function scope make code can be used

def f(x,y):

    g=3

    print('you called f(x,y) with the value x = ' + str(x) + ' and y = ' + str(y))

    print('x + y = ' + str(x + y)) # x + y, not x * y

    print(g)

f(3,2)

Output: 

you called f(x,y) with the value x = 3 and y = 2

x + y = 5

3

>>> 

Another example:

def f(x,y,z):

    return x+y+y

result = f(3,2,3)

print(result)

Output: 7 ....> because: x + y + y = 3+2+2 = 7

Nested functions and variabel scope

def highFive():

    return 5

def f(x,y):

    g = highFive()

    return x+y+g

result = f(3,2)

print (result)

Output= 10

# Posting sebelumnya:

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Python Tutorial - Global variables and Local variables - 005

 Ada dua variable penting, yaitu variabel global dan variabel lokal. Dari namanya, bisa anda tebak sendiri perbedaannya. 

Image 01 - Bangunan di kota kecil.

Local variabel dibatasi atau terbatas, sedangkan global variabel bisa diakses melalui coding.

Image 02 - Z = local variable, while x = global variable.

Contoh local variable.

Untuk contoh ini, local variable adalah x dan y.

def sum(x,y):

sum = x + y

    return sum

print(sum(7,7))

output: none, should be 14

print(my_sum(7, 7))

output: error

print(x)

output: error....> outside definisi

Contoh Variabel Global

contoh 1) 

g = 10

def afunction():

    global g

    print(g)

afunction()

output: 10

    print(g)

output: 10

Contoh 2) Modify global variabel...> Outside or inside definisi

g = 11

def afunction():

    global g

    g = 8

afunction()

print(g)

output: 8

Exercise

 g = 10

def func1():

    global g

    g = 3

def func2(x,y):

    global g

    return x+y+g

func1()

total = func2(4,5)

print(total)

output = 12

# Posting sebelumnya:

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BEST Data Analytics Certifications

Tidak ada aktifitas dalam kehidupan sehari hari tanpa melibatkan data, sehingga "data anayst" adalah salah satu profesi yang dibutuhkan saat ini. 

Image - Sertifikasi Data Analytics

Siapa saja bisa menjadi data analist, meskipun tanda gelar sarjana komputer, bahkan tanpa gelar sarjanan sama sekali. 

Caranya?

Silahkan ikuti petunjuk di website atau youtube di bawah ini.

Beberapa website atau sumber untuk dapatkan gambaran:

1) 7 BEST Data Analytics Certifications

- Top 7 BEST Data Analytics Certifications - YouTube

2) Jadi data analytic dalam 6 bulan:

-  How I Would Become a Data Analyst if I had to Start Over in 2024 | 6 Month Plan - YouTube

3) Data Science Vs Data analytic:

- Data Scientist vs Data Analyst - Which Is Right For You? (2024) - YouTube

4) Google Data Analytics Certificates:

- Google Data Analytics Professional Certificate | Coursera

5) Free Data Analytics Courses

- Free Data Analytics Courses With Certificates (2024) (mygreatlearning.com)

# Posting sebelumnya:

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Python Tutorial - Functions - 004

Function dalam Python sangat penting, diantara gunanya adalah untuk mendisain "codes" (blok code). Sehingga meningkatkan efisiensi program yang dirancang.

Image 01 - Sepiring nasi dan lauknya, ilustrasi.

Selanjutnya, Fungsi bisa dipakai untuk: 

- mengurangi pengulangan,

- meningkatkan klarifikasi "codes"

- testing dan modifikasi

Simple Python Function

1) example:

def square(x):

return x * x

print(square(5))

>>> def square(x):

return x * x

>>> print(square(5))

output: 25

2) Multiple parameters

def multiply(x,y):

    print(f'You called multiply(x,y) with the values x = {x} and y = {y}')

    print(f'x * y = (x * y = {x * y}')

multiply(4, 2)

output= 

Note: error

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