Update #2

Tutorials/pandas/README.md

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+# Pandas

Tutorials/python/_01_getting-started/casting.py

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+# Type casting
+
+pi = 3.145
+
+# type of pi
+print('Type of pi: {}'.format(type(pi)))
+
+# cast to string
+pi_to_string = str(pi)
+print('Type of pi: {}'.format(type(pi_to_string)))
+
+# cast to int
+pi_to_int = int(pi)
+print('Type of pi: {}'.format(type(pi_to_int)))
+
+# cast to boolean
+pi_to_bool = bool(pi)
+print('Type of pi: {}'.format(pi_to_bool))
+
+print('-----------------------------')
+
+year = '2025'
+
+# type of year
+print('Type of year: {}'.format(type(year)))
+
+# cast to float
+year_to_float = float(year)
+print('Type of year: {}'.format(type(year_to_float)))
+
+# cast to int
+year_to_int = int(year)
+print('Type of year: {}'.format(type(year_to_int)))
+
+# cast to boolean
+year_to_bool = bool(year)
+print('Type of year: {}'.format(year_to_bool))
+

Tutorials/python/_01_getting-started/operator.py

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+# Operators and operator precedence
+
+# Arithmetic precedence rules - PEMDAS
+
+# Without using parenthesis
+expression_1 = 1 + 3 / 5 * 7 ** 2 - 10
+
+# Using parenthesis
+expression_2 = (1 + ((3 / 5) * (7 ** 2))) - 10
+
+# Customizing output needs using parenthesis
+salary = 7_000_000 # optional: use underscores '_' to separate digits, the output is not affected
+tax = 0.2
+bills = 0.1
+savings = 0.3
+expression_3 = salary - ((salary*tax) + (salary*bills) + (salary*savings))
+
+# Results 1
+print(f"Expression 1 solution: {expression_1}")
+print(f"Expression 2 solution: {expression_2}")
+print(f"Is expression 1 equivalent to expression 2: {expression_1 == expression_2}")
+print(f"Is expression 1 the same as expression 2: {expression_1 is expression_2}")
+print(f"Expression 3 custom solution: {expression_3}")
+
+print('-----------------------------------')
+
+# Boolean operations
+# For and - both expressions are evaluated.
+# For or - either one or both are evaluated, if the first one is True, the second is not evaluated.
+
+expression_4 = ((3 * 2) == 6) and ((8 - 2) == 6)
+
+# the second boolean expression is not evaluated, otherwise it would have thrown a ZeroDivisorError
+expression_5 = ((5 - 5) == 0) or ((5 / 0) == 0)
+
+
+# Results 2
+print(f"Expression 4 solution: {expression_4}")
+print(f"Expression 5 solution: {expression_5}")

Tutorials/python/_01_getting-started/variables.py

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+# Using variables
+
+name = 'Monty'
+age = 75
+
+# using string concatenation
+message1 = 'My name is ' + name + '. I am ' + str(age) + ' years old.' 
+
+# using .format
+message2 = 'My name is {}. I am {} years old.'.format(name, age)
+
+# using a formated string (f-string)
+message3 = f'My name is {name}. I am {age} years old.'
+
+current_year = 2025
+
+message4 = f'I was born in {current_year - age}.'
+
+# print to standard output
+print(message1)
+print(message2)
+print(message3)
+print(message4)
+

Tutorials/python/_02_control-flow/counting.py

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+# Using a while loop
+
+counter = 0
+
+# print numbers 0 to 9
+while counter < 10:  # condition turns False when counter is 10
+    print(counter)
+    counter += 1 # increment counter by 1

Tutorials/python/_02_control-flow/letters.py

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+# Using a for loop
+
+word = 'python'
+
+# print each index and its corresponding letter in word
+for letter in word:
+    print('Index: {} Letter: {}'.format(word.index(letter),letter))

Tutorials/python/_02_control-flow/validate_age.py

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+# Using if-elif-else statements
+
+age = int(input('Enter your age: '))
+
+
+if not (age < 0):         # Proceed as long as the age is a positive integer
+    if age <= 18:   
+        print('Child.')
+    elif 18 < age <= 35:
+        print('Youth.')
+    elif 35 < age <= 150:
+        print('Mature.')
+    else:
+        print('A PRIME')
+else:
+    print('Invalid age.')

Tutorials/python/_03_functions/even.py

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+# even number
+
+def is_even(number: int):
+    return abs(number) % 2 == 0
+
+counter = 0
+for number in range(1452):
+    if is_even(number):
+        counter += 1
+
+print("{} even numbers found.".format(counter))

Tutorials/python/_03_functions/password.py

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+import random
+import string
+
+def generate_password(length:int = 16):
+    characters = string.ascii_letters + string.punctuation
+    new_password = ''
+    for character in characters:
+        new_password += random.choice(characters)
+    return new_password[:length]
+
+print(generate_password())