![Videokursy | Noworoczne kursobranie [29.90 zł]](/images/promocja/Helion_videokursy__0565b6888_1180-620x220.jpg)
Jest kilka róznych funkcji do pobierania tekstu z tagu.
.text - cały tekst z tagu i podtagów
.string - tylko jeśli nie ma podtagów
.get_text(strip, separator) - można usunąć białe znaki i dodać separator, który może być użyty do podzielenia na listę.
from bs4 import BeautifulSoup as BS
soup = BS('''<tag>text …import pygame
# --- constanst --- (UPPER_CASE_NAMES)
RED = (255, 0, 0)
BLACK = (0, 0, 0)
WIDHT = 500
HEIGHT = 500
# --- main ---
speed = 10
pygame.init()
window = pygame.display.set_mode((WIDHT, HEIGHT))
item = pygame.Rect(0, 0, 50, 50)
item.centery = HEIGHT//2
clock = pygame.time.Clock()
running = True
while running:
# - events -
for event in …import pygame
# --- constanst --- (UPPER_CASE_NAMES)
RED = (255, 0, 0)
BLACK = (0, 0, 0)
WIDHT = 500
HEIGHT = 500
# --- main ---
speed = 10
pygame.init()
window = pygame.display.set_mode((WIDHT, HEIGHT))
item = pygame.Rect(0, 0, 50, 50)
item.centery = HEIGHT//2
clock = pygame.time.Clock()
running = True
while running:
# - events -
for event in …First you have to create normal account on Imgur.
After loging to normal account you can go to https://api.imgur.com/oauth2/addclient to register application.
It needs application name and email. Type of authorization depends on how you will use it.
You should get API keys
Which you …
więcej »Najpierw trzeba założyć normalne konto na Imgur.
Po zalogowaniu na normalnym konice należy przejść do https://api.imgur.com/oauth2/addclient aby zarejestrować aplikację.
Wymagana jest nazwa i email. Typ autoryzacji zależy jak będzie wykorzystywana aplikacja.
Po rejestracji powinno podać klucze do API
Klucze API można wykorzystać do użycia API …
więcej »It shows how to create Listbox with Scrollbar (on right side) and how to use after() to insert new element on list every 1000ms (1s).
New element doesn't need '\n'
import tkinter as tk
import time
# --- functions ---
def add_line():
listbox.insert('end', time.strftime("%H:%M:%S"))
root.after(1000 …When you select Checkbutton then it start timer (but without displayint it).
When you deselect Checkbutton then it stop timer and display time cumulated with previous time
import tkinter as tk
import time
# --- functions ---
def func():
global total
global time_start
if cb_var.get():
time_start = time.time()
else:
total += (time.time …It shows how to get values and equation from Entry and use eval() to calculate it.
import tkinter as tk
# --- functions ---
def solve():
x = float(entry_x.get())
y = float(entry_y.get())
z = eval(equation.get())
z_var.set("{0:.3f}".format(z))
# --- main ---
root = tk.Tk()
z_var = tk.StringVar()
tk.Label …It uses dictionary to keep many IntVar which are used with Checkbutton
import tkinter as tk
# --- functions ---
def confirm():
for key, item in all_int_vars.items():
if item.get() == 1:
print(key)
# --- main ---
items = ['pizza', 'breadsticks', 'wings', 'CocaCola', 'brownie']
root = tk.Tk()
all_int_vars = {item:tk.IntVar() for item in items}
for …In documentation you can see example for pynput Monitoring The keyboard
with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
listener.join()
which blocks code but you can put code between lines
with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
# ... your code ...
listener.join()
or you can run it …
więcej »Przykład pokazuje jak stworzyć Listbox z Scrollbar (po prawej stronie) oraz jak użyć after() aby dodać nowy element do listy co 1000ms (1s).
Nowy element nie wymaga '\n'
import tkinter as tk
import time
# --- functions ---
def add_line():
listbox.insert('end', time.strftime("%H:%M:%S"))
root.after(1000, add_line) # run …Gdy zaznaczysz Checkbutton wtedy timer zostanie uruchomiony (bez wyświetlania czasu).
Gdy oznaczysz Checkbutton wtedy timer zostanie zatrzymany i wyświetlony czas zsumowany z porzedmini czasmi.
import tkinter as tk
import time
# --- functions ---
def func():
global total
global time_start
if cb_var.get():
time_start = time.time()
else:
total += (time.time() - time_start)
label['text …Przykład pokazuje jak pobrać wartości i wyrażenie z Entry i użyć eval() do jego policzenia.
import tkinter as tk
# --- functions ---
def solve():
x = float(entry_x.get())
y = float(entry_y.get())
z = eval(equation.get())
z_var.set("{0:.3f}".format(z))
# --- main ---
root = tk.Tk()
z_var = tk.StringVar()
tk.Label(root …Przykład wykorzystuje słownik (dictionary) do przechowywania wielu IntVar, które są przypisane do Checkbutton
import tkinter as tk
# --- functions ---
def confirm():
for key, item in all_int_vars.items():
if item.get() == 1:
print(key)
# --- main ---
items = ['pizza', 'breadsticks', 'wings', 'CocaCola', 'brownie']
root = tk.Tk()
all_int_vars = {item:tk.IntVar() for item in items …W dokumentacji można zobaczyć przykład dla Monitoring The keyboard
with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
listener.join()
który blokuje kod ale kod można wstawić między linie
with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
# ... your code ...
listener.join()
lub można uruchomić to w inny sposób
listener …import tkinter as tk
def select(event):
widget = root.winfo_containing(event.x_root, event.y_root)
if widget and hasattr(widget, 'selectable'):
widget['bg'] = 'red'
root = tk.Tk()
for i in range(9):
for e in range(9):
b = tk.Button(root, text="X")
b.selectable = True
b.grid(row=e, column …It uses css selector to find element.
import selenium.webdriver
driver = selenium.webdriver.Firefox()
driver.get('http://quotes.toscrape.com/login')
item = driver.find_element_by_css_selector('input[id="username"]')
item.send_keys('Hello World!')
item = driver.find_element_by_css_selector('input[id="password"]')
item.send_keys('Hello World!')
item = driver.find_element_by_css_selector('input[value="Login"]')
item.click()
I …
więcej »Przykład używa css selector do znalezienia elementu.
import selenium.webdriver
driver = selenium.webdriver.Firefox()
driver.get('http://quotes.toscrape.com/login')
item = driver.find_element_by_css_selector('input[id="username"]')
item.send_keys('Hello World!')
item = driver.find_element_by_css_selector('input[id="password"]')
item.send_keys('Hello World!')
item = driver.find_element_by_css_selector('input[value="Login"]')
item.click()
Używam …
więcej »Using
root.after(milliseconds, callback)
you can run function with delay.
You can use it to display current time
import tkinter as tk
import time
# --- function ---
def update_timer():
timer['text'] = time.strftime('%H:%M:%S')
root.after(1000, update_timer) # run again after 1000ms = 1s
# --- main ---
root = tk.Tk()
timer = tk …Strona: 1 / 11 »
