python
Table of Contents
computerstuff > software > coursinformatique
Python
Lectures
- Introduction à Python, O'Reilly
- Apprendre à programmer avec Python, PDF sur la page web de l'auteur
Documentation
- en local (file: /usr/share/doc/python2.3-doc/html/index.html)
- prospection: quand je cherche quelque chose, je fais dir(objet) et puis help(objet.attribut) dans le shell python
IDE
Anaconda
Formations
Frédéric Aidouni (2004)
J'ai suivi une formation python du 6 au 9 avril 2004.
Formateur: F. Aidouni
Trucs intéressants:
Faire un serveur web : tcpserver (package ucspi-tcp), de djb
tcpserver -v -R -H 0 10078 /home/carl/python/tp_web1.py
Voir aussi dnsbe
MOOC : Python 3 : des fondamentaux aux concepts avancés du langage
Novembre 2017
Installation des logiciels
python 3 est déjà installé :
dpkg -l python3 Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-==============-============-============-================================= ii python3 3.5.3-1 amd64 interactive high-level object-ori
Installer idle pour la version 3 de Python :
sudo aptitude install idle3
Installer ipython :
sudo aptitude install python3-pip sudo pip3 install ipython
Data wrangling in Python
https://jorisvandenbossche.github.io/FLAMES-python-data-wrangling/setup.html
Prérequis :
#!/usr/bin/env python3 # -*- coding: utf-8 -*- """ Created on Fri Oct 15 13:21:07 2021 @author: carl """ ### https://www.learnpython.org/en/ ### x = 1 if x == 1 : print("Hello, World!") myint = 7 print(myint) myfloat = 7.0 print(myfloat) myfloat = float(7) print(myfloat) mystring = 'hello' print(mystring) mystring = "hello" print(mystring) mystring = "Don't worry about apostrophes" print(mystring) one = 1 two = 2 three = one + two print(three) hello = "hello" world = "world" helloworld = hello + " " + world print(helloworld) a, b = 3, 4 print(a,b) # This will not work! one = 1 two = 2 hello = "hello" print(one + two + hello) mystring = "hello" myfloat = 10.0 myint = 20 # testing code if mystring == "hello": print("String: %s" % mystring) if isinstance(myfloat, float) and myfloat == 10.0: print("Float: %f" % myfloat) if isinstance(myint, int) and myint == 20: print("Integer: %d" % myint) numbers = [] strings = [] names = ["John", "Eric", "Jessica"] numbers.append(1) numbers.append(2) numbers.append(3) strings.append('hello') strings.append('world') second_name = names[1] print(numbers) print(strings) print("The second name on the names list is %s" % second_name) # modulo remainder = 11 % 3 print(remainder) squared = 7 ** 2 cubed = 2 ** 3 print(squared) print(cubed) lotsofhellos = ("hello" + " ") * 10 print(lotsofhellos) even_numbers = [2,4,6,8] odd_numbers = [1,3,5,7] all_numbers = odd_numbers + even_numbers print(all_numbers) print([1,2,3] * 3) x = object() y = object() # TODO: change this code x_list = [x] * 10 y_list = [y] * 10 big_list = x_list + y_list print("x_list contains %d objects" % len(x_list)) print("y_list contains %d objects" % len(y_list)) print("big_list contains %d objects" % len(big_list)) # testing code if x_list.count(x) == 10 and y_list.count(y) == 10: print("Almost there...") if big_list.count(x) == 10 and big_list.count(y) == 10: print("Great!") data = ("John", "Doe", 53.44) format_string = "Hello" print("%s %s %s. Your current balance is $%f" % (format_string, data[0], data[1], data [2])) data = ("John", "Doe", 53.44) format_string = "Hello %s %s. Your current balance is $%s." print(format_string % data) astring = "Hello world!" afewwords = astring.split(" ") print(afewwords) s = "Hey there! what should this string be?" s = "Whot shoald thas be?" # Length should be 20 print("Length of s = %d" % len(s)) # First occurrence of "a" should be at index 8 print("The first occurrence of the letter a = %d" % s.index("a")) # Number of a's should be 2 print("a occurs %d times" % s.count("a")) # Slicing the string into bits print("The first five characters are '%s'" % s[:5]) # Start to 5 print("The next five characters are '%s'" % s[5:10]) # 5 to 10 print("The thirteenth character is '%s'" % s[12]) # Just number 12 print("The characters with odd index are '%s'" %s[1::2]) #(0-based indexing) print("The last five characters are '%s'" % s[-5:]) # 5th-from-last to end # Convert everything to uppercase print("String in uppercase: %s" % s.upper()) # Convert everything to lowercase print("String in lowercase: %s" % s.lower()) # Check how a string starts if s.startswith("Str"): print("String starts with 'Str'. Good!") # Check how a string ends if s.endswith("ome!"): print("String ends with 'ome!'. Good!") # Split the string into three separate strings, # each containing only a word print("Split the words of the string: %s" % s.split(" ")) numbers = [ 951, 402, 984, 651, 360, 69, 408, 319, 601, 485, 980, 507, 725, 547, 544, 615, 83, 165, 141, 501, 263, 617, 865, 575, 219, 390, 984, 592, 236, 105, 942, 941, 386, 462, 47, 418, 907, 344, 236, 375, 823, 566, 597, 978, 328, 615, 953, 345, 399, 162, 758, 219, 918, 237, 412, 566, 826, 248, 866, 950, 626, 949, 687, 217, 815, 67, 104, 58, 512, 24, 892, 894, 767, 553, 81, 379, 843, 831, 445, 742, 717, 958, 609, 842, 451, 688, 753, 854, 685, 93, 857, 440, 380, 126, 721, 328, 753, 470, 743, 527 ] for number in numbers: if number == 237: break if number % 2 == 1: continue print(number) # Modify this function to return a list of strings as defined above def list_benefits(): list = ["More organized code", "More readable code", "Easier code reuse", "Allowing programmers to share and connect code together"] return list # Modify this function to concatenate to each benefit - " is a benefit of functions!" def build_sentence(benefit): sentence = benefit + " is a benefit of functions!" return sentence def name_the_benefits_of_functions(): list_of_benefits = list_benefits() for benefit in list_of_benefits: print(build_sentence(benefit)) name_the_benefits_of_functions() class MyClass: variable = "blah" def function(self): print("This is a message inside the class.") myobjectx = MyClass() myobjectx.variable print(myobjectx.variable) myobjectx = MyClass() myobjecty = MyClass() myobjecty.variable = "yackity" # Then print out both values print(myobjectx.variable) print(myobjecty.variable) myobjectx.function() # define the Vehicle class class Vehicle: name = "" kind = "car" color = "" value = 100.00 def description(self): desc_str = "%s is a %s %s worth $%.2f." % (self.name, self.color, self.kind, self.value) return desc_str # your code goes here car1 = Vehicle() car2 = Vehicle() car1.kind = "convertible" car1.color = "red" car1.value = 600000.00 car1.name = "Fer" car2.kind = "van" car2.color = "blue" car2.value = 10000.00 car2.name = "Jump" # test code print(car1.description()) print(car2.description()) phonebook = {} phonebook["John"] = 938477566 phonebook["Jack"] = 938377264 phonebook["Jill"] = 947662781 print(phonebook) phonebook = { "John" : 938477566, "Jack" : 938377264, "Jill" : 947662781 } print(phonebook) phonebook = {"John" : 938477566,"Jack" : 938377264,"Jill" : 947662781} for name, number in phonebook.items(): print("Phone number of %s is %d" % (name, number)) del phonebook["John"] print(phonebook) phonebook = { "John" : 938477566, "Jack" : 938377264, "Jill" : 947662781 } phonebook.pop("John") print(phonebook) phonebook = { "John" : 938477566, "Jack" : 938377264, "Jill" : 947662781 } # your code goes here phonebook["Jake"] = 938273443 del phonebook["Jill"] # testing code if "Jake" in phonebook: print("Jake is listed in the phonebook.") if "Jill" not in phonebook: print("Jill is not listed in the phonebook.") import re find_members = [] for member in dir(re): if "find" in member: find_members.append(member) print(sorted(find_members))
python.txt · Last modified: 2021/10/19 21:23 by carl