0x07. Python - Test-driven development

I learned about docstring and unittest in Python.

Tests ✔️

• tests: Test files.
  • 0-add_integer.txt
  • 2-matrix_divided.txt
  • 3-say_my_name.txt
  • 4-print_square.txt
  • 5-text_indentation.txt
  • 6-max_integer_test.py
  • 100-matrix_mul.txt
  • 101-lazy_matrix_mul.txt

Function Prototypes 💾

Prototypes for functions written in this project:

File	Prototype
0-add_integer.py	def add_integer(a, b=98):
2-matrix_divided.py	def matrix_divided(matrix, div):
3-say_my_name.py	def say_my_name(first_name, last_name=""):
4-print_square.py	def print_square(size):
5-text_indentation.py	def text_indentation(text):
100-matrix_mul.py	def matrix_mul(m_a, m_b):
101-lazy_matrix_mul.py	def lazy_matrix_mul(m_a, m_b):
102-python.c	void print_python_string(PyObject *p);

Tasks 📃

• 0. Integers addition

  • 0-add_integer.py: Python function that returns the integer addition of two numbers.
  • If either of a or b is not an int or float, a TypeError is raised with the message a must be an integer or b must be an integer.
  • If either of a or b is a float, it is casted to an int before addition.

• 1. Divide a matrix

  • 2-matrix_divided.py: Python function that divides all elements of a matrix by a common divisor.
  • Returns a new matrix representing the division of all elements of matrix by div.
  • Quotients are rounded to two decimal places.
  • If matrix is not a list of lists of ints or floats, a TypeError is raised with the message matrix must be a matrix (list of lists) of integers/floats.
  • If matrix contains rows of different lengths, a TypeError is raised with the message Each row of the matrix must have the same size.
  • If the divisor div is not an int or float, a TypeError is raised with the message div must be a number.
  • If div is 0, a ZeroDivisionError is raised with the message division by zero.

• 2. Say my name

  • 3-say_my_name.py: Python function that prints a name in the format My name is <first_name> <last_name>.
  • If either of first_name or last_name is not a str, a TypeError is raised with the message first_name must be a string or last_name must be a string.

• 3. Print square

  • 4-print_square.py: Python function that prints a square using the # character.
  • The paramter size represents the height/width of the square.
  • If size is not an int, a TypeError is raised with the message, size must be an integer.
  • If size is less than 0, a ValueError is raised with the message size must be >= 0.

• 4. Text indentation

  • 5-text_indentation.py: Python function that prints text with indentation.
  • Two new lines are printed after any ., ?, or : character.
  • If text is not a str, a TypeError is raised with the message text must be a string.
  • No spaces are printed at the beginning or end of each printed line.

• 5. Max integer - Unittest

  • tests/6-max_integer_test.py: Python class/script that runs unittests for the function def max_integer(list=[]): (provided by Holberton School).

• 6. Matrix multiplication

  • 100-matrix_mul.py: Python function that multiplies two matrices.
  • Returns a new matrix representing the multiplication of m_a by m_b.
  • If either of m_a or m_b is empty (ie. == [] or == [[]]), a ValueError is raised with the message m_a can't be empty or m_b can't be empty.
  • If either of m_a or m_b is not a list, a TypeError is raised with the message m_a must be a list or m_b must be a list.
  • If either of m_a or m_b is not a list of lists, a TypeError is raised with the message m_a must be a list of lists or m_b must be a list of lists.
  • If either of m_a or m_b is not a list of lists of ints or floats, a TypeError is raised with the message m_a should contain only integers or floats or m_b should contain only integers or floats.
  • If either of m_a or m_b contains rows of different lengths, a TypeError is raised with the message each row of m_a must should be of the same size or each row of m_b must should be of the same size.
  • If m_a and m_b cannot be multiplied (ie. row size of m_a does not match column size of m_b), a ValueError is raised with the message m_a and m_b can't be multiplied.

• 7. Lazy matrix multiplication

  • 101-lazy_matrix_mul.py: Python function that multiplies two matrices using the module NumPy.
  • Identical in function to 100-matrix_mul.py.

• 8. CPython #3: Python Strings

  • 102-python.c: C function that prints basic information about Python string objects.