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+webbed +wee +weekly +weepy +weighty +weird +welcome +well-documented +well-groomed +well-informed +well-lit +well-made +well-off +well-to-do +well-worn +wet +which +whimsical +whirlwind +whispered +whispering +white +whole +wholesale +whopping +wicked +wide +wide-eyed +wiggly +wild +willing +wilted +winding +windy +winged +wiry +wise +wistful +witty +wobbly +woebegone +woeful +womanly +wonderful +wooden +woozy +wordy +workable +worldly +worn +worried +worrisome +worse +worst +worthless +worthwhile +worthy +wrathful +wretched +writhing +wrong +wry +xenophobic +yawning +yearly +yellow +yellowish +yielding +young +youthful +yummy +zany +zealous +zesty +zigzag +zippy +zonked diff --git a/assets/login_generator.py b/assets/login_generator.py new file mode 100644 index 0000000..29b7974 --- /dev/null +++ b/assets/login_generator.py @@ -0,0 +1,56 @@ +import random +import string + + +def load_file(filename): + """ + We load a file and make a list out of it. Note that the same function is + used for both files (both adjectives and subjects). Functions should be + made as generic as possible. + + There IS a problem you can fix, some logins will have spaces in them. Try + to remove them in this function! + """ + words = [] + with open(filename, "r") as fp: + lines = fp.readlines() + for line in lines: + words.append(line.strip()) # what does strip() do, what does append() do? remember CTRL+Q! + return words + + +def generate_username(): + """ + We'll generate a random pair of adjectives and subjects from two wordlists. + You NEED to have both files in you python project for this to work! Note + the capitalize method call to make it all prettier... + """ + adjectives = load_file("./adjectives.txt") + subjects = load_file("./subjects.txt") + adjective = random.choice(adjectives) + subject = random.choice(subjects) + username = adjective.capitalize() + subject.capitalize() + return username + + +def generate_password(length=10, complictated=True): + """ + We generate a password with default settings. You can overide these by + changing the arguments in the function call. + """ + password = "" + if complictated: + chars = string.ascii_letters + string.digits + string.punctuation + else: + chars = string.ascii_letters + for i in range(0, length): + password += random.choice(chars) + return password + + +if __name__ == "__main__": + # let's do some testing! + username_test = generate_username() + print(username_test) + password_test = generate_password() + print(password_test) diff --git a/assets/pwd_cli.py b/assets/pwd_cli.py new file mode 100644 index 0000000..c5f3830 --- /dev/null +++ b/assets/pwd_cli.py @@ -0,0 +1,61 @@ +import login_generator + + +def prompt(): + """ + We prompt but you KNOW how this works! + """ + response = "" + while not response.isdigit(): + response = input("how many login pairs would you like to create?") + return int(response) + + +def how_long(): + """ + And again... (we could combine both prompts, but how?) + """ + response = "" + while not response.isdigit(): + response = input("how long should the password be?") + return int(response) + + +def complex_or_not(): + response = "" + while response.lower() not in ["y", "n"]: + response = input("you want complex passwords? (y/n)") + if response.lower() == "y": + return True + else: + return False + + +def create_login(length, complicated): + """ + We use our library to generate the username and password. The double return + might look confusing but just look at the for loop in the generate_logins + functions and you'll see how it unpacks... + """ + username = login_generator.generate_username() + password = login_generator.generate_password(length, complicated) + return username, password + + +def generate_logins(number, length, complicated): + """ + Easy no? But what does the i do? Do we really need it's value? + """ + for i in range(0, number): + username, password = create_login(length, complicated) + print("username {}: {}".format(i, username)) + print("password {}: {}".format(i, password)) + + +if __name__ == "__main__": + # Here we go! + number_of_logins = prompt() + complicted = complex_or_not() + length = how_long() + generate_logins(number_of_logins, length, complicted) + diff --git a/assets/subjects.txt b/assets/subjects.txt new file mode 100644 index 0000000..52736ce --- /dev/null +++ b/assets/subjects.txt @@ -0,0 +1,239 @@ +Aardvark +African elephant +Albatross +Alley cat +Alligator +Amphibian +Ant +Anteater +Antelope +Ape +Armadillo +Asian elephant +Baboon +Badger +Bat +Bear +Beaver +Beetle +Billy goat +Bison +Boar +Bobcat +Bovine +Bronco +Buck +Buffalo +Bug +Bull +Bunny +BunnyCalf +Camel +Canary +Canine +Caribou +Cat +Caterpillar +Centipede +Chanticleer +Cheetah +Chick +Chimpanzee +Chinchilla +Chipmunk +Clam +Cockatiel +Colt +Condor +Cougar +Cow +Coyote +Crab +Crane +Creature +Crocodile +Crow +Cub +Cur +Cygnet +Deer +Dingo +Dodo +Doe +Dog +Dolphin +Donkey +Dove +Drake +Duck +Eagle +Egret +Elephant +Elk +Emu +Ewe +Falcon +Fawn +Feline +Ferret +Flamingo +Flee +Flies +Foal +Fowl +Fox +Frog +Gander +Gazelle +Gelding +Gerbil +Gibbon +Giraffe +Goat +Goose +Gopher +Gorilla +Grizzly bear +Guinea pig +Hamster +Hare +Hawk +Hedgehog +Heifer +Hippopotamus +Horse +Hound +Hummingbird +Hyena +Ibis +Iguana +Jackal +Jackrabbit +Jaguar +Javalina +Jellyfish +Jenny +Joey +Kangaroo +Kid +Kitten +Kiwi +Koala +Komodo dragon +Krill +Lamb +Lemming +Lemur +Leopard +Lion +Lioness +Llama +Lobster +Lynx +Macaw +Manatee +Marmoset +Marmot +Mink +Minnow +Mite +Mockingbird +Mole +Mongoose +Mongrel +Monkey +Moose +Mouse +Mule +Mustang +Mutt +Nag +Narwhale +Newt +Ocelot +Octopus +Opossum +Orangutan +Orca +Osprey +Ostrich +Otter +Owl +Ox +Pachyderm +Panda +Panther +Parakeet +Parrot +Peacock +Pelican +Penguin +Pheasant +Pig +Pigeon +Piglet +Platypus +Pony +Pooch +Porcupine +Porpoise +Primate +Puppy +Pussycat +Rabbit +Raccoon +Ram +Rat +Reptiles +Rhinoceros +Robin +Rooster +Salamander +Sea lion +Seagull +Seal +Sheep +Sidewinder +Skunk +Sloth +Snail +Snake +Songbird +Sow +Spider +Squid +Squirrel +Stallion +Steer +Stork +Stork +Swan +Tadpole +Tapir +Terrapin +Thoroughbred +Tiger +Toad +Tortoise +Toucan +Turkey +Uakari +Unicorn +Vixen +Vole +Vulture +Wallaby +Walrus +Warthog +Wasp +Weasel +Whale +Wildebeast +Wolf +Wombat +Woodpecker +Worm +X-ray fish +Yak +Zebra + diff --git a/learning_python3.md b/learning_python3.md index 63a5399..ded8655 100644 --- a/learning_python3.md +++ b/learning_python3.md @@ -1509,23 +1509,129 @@ print(digits) # Handling files +When we `import` a library python will read and execute the file in question. +We can also just *read* a simple text file and *use* the data that's in the file. +There are two ways of reading a file, one more *pythonic* and one more linear. +I'll outline both and you can use whichever seems more logical to you. + ## Reading from a file +### In-line way + +The builtin function `open` is what's new here. +It takes two arguments, one is the [path](https://en.wikipedia.org/wiki/Path_(computing)) and the other is a *mode*. +The most used modes are **read** or **write**, and this as either **text** or **binary**. +Have a look at the documentation to discover more modes. + +```python3 +fp = open("./examples/data.txt", "r") +data = fp.readlines() +print("file contains: {}".format(data)) +fp.close() +``` + +### Pythonic way + +The *exact* same thing can be done in a more pythonic way as follows. +The beauty of the `with` syntax is that the `close` function call is implied by the indentation. +I personally prefer this way of reading and writing files but you do you! + +```python3 +file_to_open = "./examples/data.txt" + +with open(file_to_open, "r") as fp: + data = fp.readlines() + print("file contains: {}".format(data)) + +print("{} has {} lines".format(file_to_open, len(data))) +``` + ## Writing to a file -## csv, JSON and yaml +Writing to a file can also be done in two ways, a pythonic and *less* pythonic way. +As I prefer the pythonic way I'll only showcase that one but you'll be able to easily adapt the code yourself. +The only difference is the **mode** we use to `open` the file. -## pickle +```python3 +first_name = input("what's your first name? ") +last_name = input("what's your last name? ") +birthday = input("what's your date of birth? ") + +data = [first_name, last_name, birthday] + +file_to_open = "./examples/test.tmp" + +with open(file_to_open, "w") as fp: + for element in data: + fp.write("{}\n".format(element)) +print("done!") +``` + +There is also a way to write a batch of lines to a file in one go. +This is done as follows. +But, you'll notice there is no **newline** added after each element. + +```python3 +data = ["wouter", "gordts", "1986"] + +file_to_open = "./examples/test.tmp" + +with open(file_to_open, "w") as fp: + fp.writelines(data) +``` # Coding challenge - Login generator -TODO write a login generator as a library with a cli as program -BONUS argparse, save to file, read from file +Can you write me a program that creates random, but easy to remember, usernames? +Plus, for each username also a *not-so-easy-to-remember* password? +Maybe with a bit of flexibility? +For example variable password length? + +This is an exercise you can take pretty far if you plan it out properly. +I would advise you to write the **generator** functions as a library. +Then import those functions into the program where you implement the user facing logic. +By doing so you can reuse your code for multiple interfaces (CLI, TUI, [argparse](https://docs.python.org/3/howto/argparse.html)). +If you want to you can also **save** your logins to a file! + +An example of the output I expect: + +``` +how many login pairs would you like to create?3 +you want complex passwords? (y/n)y +how long should the password be?32 +username 0: EarnestCrocodile +password 0: :sdGV&[FDYZZ|RXUpZeo`J&t@*Z>^fEW +username 1: AbstractedDragon +password 1: 32hz5&C@ + Spoiler warning + +This spoiler warning is in multiple steps. +If you're unsure how to generate the *random-yet-easy-to-remember* have a look at [this file](./assets/subjects.txt) and [this file](./assets/adjectives.txt). + +**Stop here and try it out!** + +If you're unsure how to tackle the *library part* of this exercise, have a look at [this file](./assets/login_generator.py). +Don't just copy this code, read it and recreate it yourself! + +**Stop here and try it out!** + +Once the library is done you can code the *interface*. +For some inspiration for a simple question/response system you can have a look [here](./assets/pwd_cli.py). + + + # Dictionaries as data containers TODO adapt the login generator to output a dict +## csv, JSON and yaml + # Creating our own classes ## Class examples