Kategorie: Modules

Password-Manager with Salt and Pepper (commented version will follow soon)

robert / / Basics, Daily Code, Modules 
from hashlib import pbkdf2_hmac

lower_case = list("abcdefghijklmnopqrstuvwxyz")
upper_case = list("ABCDEFGHJKLMNOPQRTUVWXYZ")
numbers = list("0123456789")
special_char = list("!§$%&/()=?[],.-")
password_chars = lower_case + upper_case + numbers + special_char
salt = "pepper"

def convert_bytes_to_password(hashed_bytes, length):
    number = int.from_bytes(hashed_bytes, byteorder="big")
    password = ""
    while number > 0 and len(password) < length:
        password = password + password_chars[number % len(password_chars)]
        number = number // len(password_chars)
    return password

master_password = input("Master Password: ")
domain = input("Website: ")

while len(domain) < 1:
    print("Enter a Website you want to generate the password for: ")
    domain = input("Website: ")

hash_string = domain + master_password

hashed_bytes = pbkdf2_hmac("sha512",
                            hash_string.encode("utf-8"),
                            salt.encode("utf-8"),
                            4096)

print("Passwort: " + convert_bytes_to_password(hashed_bytes, 10))

Day 69: Make Good Looking Tables With PrettyTable (Module)

robert / / Daily Code, Modules

 

Scripts running in the shell are pretty cool. But sometime you want to display tables that have no real format.

 

The module PrettyTable generates some – well pretty – tables with just a couple of lines.

 

The script takes a dictionary with the sizes of all planets in the solar system.

 

It exports it in a PrettyTable in descending order.

 

# PrettyTable module
# Create handsome tables in your shell
from prettytable import PrettyTable

planets = {"Mercury" : "4879",
        "Venus" : "12104",
        "Earth" : "12756",
        "Mars" : "6779",
        "Jupiter" : " 142984",
        "Saturn" : "120536",
        "Uranus" : "50724",
        "Neptune" : "49244"
        }

# create the table with two colums
size_table = PrettyTable(["Planet", "Diameter (km)"])

# go over every planet in dict and add a row for each
for item in planets:
    size_table.add_row([item, planets[str(item)]])

# sort planets from big to small
size_table.sort = True

print(size_table)

The output looks like this:

 

 

Day 58: Using Progress Bars In The Shell (Module)

robert / / Daily Code, Modules

 

The module ProgressBar generates timed progress bars in the terminal while you execute a program.

 

A progress bar is seldomly really necessary but sometimes it is just neat to display some progress for the user

 

You can find the documentation here

 

An easy example:

 

from time import sleep                          # to use the timer
from progressbar import ProgressBar             # progressbar module


print("Multiplying 987.000 * 1.210.100")        

num = 987000 * 1210100


bar = ProgressBar()                         
for i in bar(range(100)):
    sleep(0.01)
    bar.update(i)

print("Result: " + str(num))

And this is what it looks like in the terminal:

 

Day 57: Get Global Weather Data with OpenWeatherMap (Module)

robert / / Daily Code, Modules

 

OpenWeatherMap provides free weather data for every city worldwide.

 

#Takes the name of a city and delivers
# weather data via OpenWeatherMap

import pyowm               # OpenWeatherMap-module for python

owm = pyowm.OWM('a22ec5378101af24d94fb76fexxxxx')  # You MUST provide your own API key - this one will not work

city = input("Weather forecast: (Enter City): ")


# Search for current weather in city via OWM
observation = owm.weather_at_place(city)
w = observation.get_weather()

print(city.capitalize())
# extract and print the various data
get_str = str(w)
stat = get_str.find('status') + 7
print("Condition: " + get_str[stat:-1])

tempe = w.get_temperature('celsius')

print("Celsius: " + str(tempe['temp']))

print("Humidity: " + str(w.get_humidity()))

speed = w.get_wind()

print("Wind: " + str(speed['speed']) + " kph")