- Allowed editors:
vi,vim,emacs - All your files will be interpreted/compiled on Ubuntu 20.04 LTS using python3 (version 3.8.5)
- All your files should end with a new line
- The first line of all your files should be exactly
#!/usr/bin/python3 - A
README.mdfile, at the root of the folder of the project, is mandatory - Your code should use the pycodestyle (version
2.8.*) - All your files must be executable
- The length of your files will be tested using
wc
- Allowed editors:
vi,vim,emacs - All your files should end with a new line
- All your test files should be inside a folder
tests - All your test files should be text files (extension:
.txt) - All your tests should be executed by using this command:
python3 -m doctest ./tests/* - All your modules should have a documentation (
python3 -c 'print(__import__("my_module").__doc__)') - We strongly encourage you to work together on test cases, so that you don’t miss any edge case – The Checker is checking for tests!
0. Integers addition 0-add_integer.txt
Write a function that adds 2 integers.
- Prototype: def add_integer(a, b=98):
aandbmust be integers or floats, otherwise raise aTypeErrorexception with the messagea must be an integerorb must be an integeraandbmust be first casted to integers if they are float- Returns an integer: the addition of
aandb - You are not allowed to import any module
guillaume@ubuntu:~/0x07$ cat 0-main.py
#!/usr/bin/python3
add_integer = __import__('0-add_integer').add_integer
print(add_integer(1, 2))
print(add_integer(100, -2))
print(add_integer(2))
print(add_integer(100.3, -2))
try:
print(add_integer(4, "School"))
except Exception as e:
print(e)
try:
print(add_integer(None))
except Exception as e:
print(e)
guillaume@ubuntu:~/0x07$ ./0-main.py
3
98
100
98
b must be an integer
a must be an integer
guillaume@ubuntu:~/0x07$ python3 -m doctest -v ./tests/0-add_integer.txt | tail -2
9 passed and 0 failed.
Test passed.
guillaume@ubuntu:~/0x07$ python3 -c 'print(__import__("0-add_integer").__doc__)' | wc -l
5
guillaume@ubuntu:~/0x07$ python3 -c 'print(__import__("0-add_integer").add_integer.__doc__)' | wc -l
3
guillaume@ubuntu:~/0x07$
1. Divide a matrix 2-matrix_divided.txt
Write a function that divides all elements of a matrix.
- Prototype:
def matrix_divided(matrix, div): matrixmust be a list of lists of integers or floats, otherwise raise aTypeErrorexception with the messagematrix must be a matrix (list of lists) of integers/floats- Each row of the
matrixmust be of the same size, otherwise raise aTypeErrorexception with the messageEach row of the matrix must have the same size divmust be a number (integer or float), otherwise raise aTypeErrorexception with the messagediv must be a numberdivcan’t be equal to0, otherwise raise aZeroDivisionErrorexception with the messagedivision by zero- All elements of the matrix should be divided by
div, rounded to2decimal places - Returns a new matrix
- You are not allowed to import any module
guillaume@ubuntu:~/0x07$ cat 2-main.py
#!/usr/bin/python3
matrix_divided = __import__('2-matrix_divided').matrix_divided
matrix = [
[1, 2, 3],
[4, 5, 6]
]
print(matrix_divided(matrix, 3))
print(matrix)
guillaume@ubuntu:~/0x07$ ./2-main.py
[[0.33, 0.67, 1.0], [1.33, 1.67, 2.0]]
[[1, 2, 3], [4, 5, 6]]
guillaume@ubuntu:~/0x07$ python3 -m doctest -v ./tests/2-matrix_divided.txt | tail -2
5 passed and 0 failed.
Test passed.
guillaume@ubuntu:~/0x07$
Note: you might have a different number of tests than in the above example. As usual, your tests should cover all possible cases.
2. Say my name 3-say_my_name.txt
Write a function that prints My name is <first name> <last name>
- Prototype: def say_my_name(first_name, last_name=""):
first_nameandlast_namemust be strings otherwise, raise aTypeErrorexception with the messagefirst_name must be a stringorlast_name must be a string- You are not allowed to import any module
guillaume@ubuntu:~/0x07$ cat 3-main.py
#!/usr/bin/python3
say_my_name = __import__('3-say_my_name').say_my_name
say_my_name("John", "Smith")
say_my_name("Walter", "White")
say_my_name("Bob")
try:
say_my_name(12, "White")
except Exception as e:
print(e)
guillaume@ubuntu:~/0x07$ ./3-main.py | cat -e
My name is John Smith$
My name is Walter White$
My name is Bob $
first_name must be a string$
guillaume@ubuntu:~/0x07$ python3 -m doctest -v ./tests/3-say_my_name.txt | tail -2
5 passed and 0 failed.
Test passed.
guillaume@ubuntu:~/0x07$
3. Print square 4-print_square.txt
Write a function that prints a square with the character #.
- Prototype:
def print_square(size): sizeis the size length of the squaresizemust be an integer, otherwise raise aTypeErrorexception with the messagesize must be an integer- if
sizeis less than0, raise aValueErrorexception with the messagesize must be >= 0 - if
sizeis a float and is less than0, raise aTypeErrorexception with the messagesize must be an integer - You are not allowed to import any module
guillaume@ubuntu:~/0x07$ cat 4-main.py
#!/usr/bin/python3
print_square = __import__('4-print_square').print_square
print_square(4)
print("")
print_square(10)
print("")
print_square(0)
print("")
print_square(1)
print("")
try:
print_square(-1)
except Exception as e:
print(e)
print("")
guillaume@ubuntu:~/0x07$ ./4-main.py
####
####
####
####
##########
##########
##########
##########
##########
##########
##########
##########
##########
##########
#
size must be >= 0
guillaume@ubuntu:~/0x07$ python3 -m doctest -v ./tests/4-print_square.txt
guillaume@ubuntu:~/0x07$
4. Text indentation 5-text_indentation.txt
Write a function that prints a text with 2 new lines after each of these characters: ., ? and :
- Prototype:
def text_indentation(text): textmust be a string, otherwise raise aTypeErrorexception with the messagetext must be a string- There should be no space at the beginning or at the end of each printed line
- You are not allowed to import any module
guillaume@ubuntu:~/0x07$ cat 5-main.py
#!/usr/bin/python3
text_indentation = __import__('5-text_indentation').text_indentation
text_indentation("""Lorem ipsum dolor sit amet, consectetur adipiscing elit. \
Quonam modo? Utrum igitur tibi litteram videor an totas paginas commovere? \
Non autem hoc: igitur ne illud quidem. Fortasse id optimum, sed ubi illud: \
Plus semper voluptatis? Teneo, inquit, finem illi videri nihil dolere. \
Transfer idem ad modestiam vel temperantiam, quae est moderatio cupiditatum \
rationi oboediens. Si id dicis, vicimus. Inde sermone vario sex illa a Dipylo \
stadia confecimus. Sin aliud quid voles, postea. Quae animi affectio suum \
cuique tribuens atque hanc, quam dico. Utinam quidem dicerent alium alio \
beatiorem! Iam ruinas videres""")
guillaume@ubuntu:~/0x07$ ./5-main.py | cat -e
Lorem ipsum dolor sit amet, consectetur adipiscing elit.$
$
Quonam modo?$
$
Utrum igitur tibi litteram videor an totas paginas commovere?$
$
Non autem hoc:$
$
igitur ne illud quidem.$
$
Fortasse id optimum, sed ubi illud:$
$
Plus semper voluptatis?$
$
Teneo, inquit, finem illi videri nihil dolere.$
$
Transfer idem ad modestiam vel temperantiam, quae est moderatio cupiditatum rationi oboediens.$
$
Si id dicis, vicimus.$
$
Inde sermone vario sex illa a Dipylo stadia confecimus.$
$
Sin aliud quid voles, postea.$
$
Quae animi affectio suum cuique tribuens atque hanc, quam dico.$
$
Utinam quidem dicerent alium alio beatiorem! Iam ruinas videresguillaume@ubuntu:~/0x07$
guillaume@ubuntu:~/0x07$ python3 -m doctest -v ./tests/5-text_indentation.txt
guillaume@ubuntu:~/0x07$
Since the beginning you have been creating “Interactive tests”. For this exercise, you will add Unittests.
In this task, you will write unittests for the function def max_integer(list=[]):.
- Your test file should be inside a folder
tests - You have to use the unittest module
- Your test file should be python files (extension:
.py) - Your test file should be executed by using this command:
python3 -m unittest tests.6-max_integer_test - All tests you make must be passable by the function below
- We strongly encourage you to work together on test cases, so that you don’t miss any edge case
guillaume@ubuntu:~/0x07$ cat 6-max_integer.py
#!/usr/bin/python3
"""Module to find the max integer in a list
"""
def max_integer(list=[]):
"""Function to find and return the max integer in a list of integers
If the list is empty, the function returns None
"""
if len(list) == 0:
return None
result = list[0]
i = 1
while i < len(list):
if list[i] > result:
result = list[i]
i += 1
return result
guillaume@ubuntu:~/0x07$
guillaume@ubuntu:~/0x07$ cat 6-main.py
#!/usr/bin/python3
max_integer = __import__('6-max_integer').max_integer
print(max_integer([1, 2, 3, 4]))
print(max_integer([1, 3, 4, 2]))
guillaume@ubuntu:~/0x07$
guillaume@ubuntu:~/0x07$ ./6-main.py
4
4
guillaume@ubuntu:~/0x07$
guillaume@ubuntu:~/0x07$ python3 -m unittest tests.6-max_integer_test 2>&1 | tail -1
OK
guillaume@ubuntu:~/0x07$
guillaume@ubuntu:~/0x07$ head -7 tests/6-max_integer_test.py
#!/usr/bin/python3
"""Unittest for max_integer([..])
"""
import unittest
max_integer = __import__('6-max_integer').max_integer
class TestMaxInteger(unittest.TestCase):
guillaume@ubuntu:~/0x07$
6. Matrix multiplication 100-matrix_mul.txt
Write a function that multiplies 2 matrices:
-
Read: Matrix multiplication - only Matrix product (two matrices)
-
Prototype:
def matrix_mul(m_a, m_b): -
m_aandm_bmust be validated with these requirements in this order -
m_aandm_bmust be an list of lists of integers or floats:- if
m_aorm_bis not a list: raise aTypeErrorexception with the messagem_a must be a list or m_b must be a list - if
m_aorm_bis not a list of lists: raise aTypeErrorexception with the messagem_a must be a list of lists or m_b must be a list of lists - if
m_aorm_bis empty (it means:= []or= [[]]): raise aValueErrorexception with the messagem_a can't be empty or m_b can't be empty - if one element of those list of lists is not an integer or a float: raise a
TypeErrorexception with the messagem_a should contain only integersorfloats or m_b should contain only integers or floats - if
m_aorm_bis not a rectangle (all ‘rows’ should be of the same size): raise aTypeErrorexception with the messageeach row of m_a must be of the same sizeoreach row of m_b must be of the same size
- if
-
If
m_aandm_bcan’t be multiplied: raise aValueErrorexception with the messagem_a and m_b can't be multiplied -
You are not allowed to import any module
guillaume@ubuntu:~/0x07$ cat 100-main.py
#!/usr/bin/python3
matrix_mul = __import__('100-matrix_mul').matrix_mul
print(matrix_mul([[1, 2], [3, 4]], [[1, 2], [3, 4]]))
print(matrix_mul([[1, 2]], [[3, 4], [5, 6]]))
guillaume@ubuntu:~/0x07$ ./100-main.py
[[7, 10], [15, 22]]
[[13, 16]]
guillaume@ubuntu:~/0x07$ python3 -m doctest -v ./tests/100-matrix_mul.txt | tail -2
6 passed and 0 failed.
Test passed.
guillaume@ubuntu:~/0x07$
7. Lazy matrix multiplication 101-lazy_matrix_mul.txt
Write a function that multiplies 2 matrices by using the module NumPy
To install it: pip3 install numpy==1.15.0
- Prototype:
def lazy_matrix_mul(m_a, m_b): - Test cases should be the same as
100-matrix_mulbut with new exception type/message
guillaume@ubuntu:~/0x07$ cat 101-main.py
#!/usr/bin/python3
lazy_matrix_mul = __import__('101-lazy_matrix_mul').lazy_matrix_mul
print(lazy_matrix_mul([[1, 2], [3, 4]], [[1, 2], [3, 4]]))
print(lazy_matrix_mul([[1, 2]], [[3, 4], [5, 6]]))
guillaume@ubuntu:~/0x07$ ./101-main.py
[[ 7 10]
[15 22]]
[[13 16]]
guillaume@ubuntu:~/0x07$ python3 -m doctest -v ./tests/101-lazy_matrix_mul.txt
guillaume@ubuntu:~/0x07$
Create a function that prints Python strings.
- Prototype:
void print_python_string(PyObject *p); - Format: see example
- If
pis not a valid string, print an error message (see example) - Read: Unicode HOW TO
About:
- Python version: 3.4
- You are allowed to use the C standard library
- Your shared library will be compiled with this command line:
gcc -shared -Wl,-soname,libPython.so -o libPython.so -fPIC -I/usr/include/python3.4 102-python.c
julien@ubuntu:~/0x07. Pyhton Strings$ cat 102-tests.py
import ctypes
lib = ctypes.CDLL('./libPython.so')
lib.print_python_string.argtypes = [ctypes.py_object]
s = "The spoon does not exist"
lib.print_python_string(s)
s = "ложка не существует"
lib.print_python_string(s)
s = "La cuillère n'existe pas"
lib.print_python_string(s)
s = "勺子不存在"
lib.print_python_string(s)
s = "숟가락은 존재하지 않는다."
lib.print_python_string(s)
s = "スプーンは存在しない"
lib.print_python_string(s)
s = b"The spoon does not exist"
lib.print_python_string(s)
julien@ubuntu:~/0x07. Pyhton Strings$ gcc -shared -Wl,-soname,libPython.so -o libPython.so -fPIC -I/usr/include/python3.4 102-python.c
julien@ubuntu:~/0x07. Pyhton Strings$ python3 ./102-tests.py
[.] string object info
type: compact ascii
length: 24
value: The spoon does not exist
[.] string object info
type: compact unicode object
length: 19
value: ложка не существует
[.] string object info
type: compact unicode object
length: 24
value: La cuillère n'existe pas
[.] string object info
type: compact unicode object
length: 5
value: 勺子不存在
[.] string object info
type: compact unicode object
length: 14
value: 숟가락은 존재하지 않는다.
[.] string object info
type: compact unicode object
length: 10
value: スプーンは存在しない
[.] string object info
[ERROR] Invalid String Object
julien@ubuntu:~/0x07. Pyhton Strings$