rozne

Author: furas

CGI/simple-server-with-different-languages/cgi-bin/download.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+import os
+import sys
+
+fullpath = 'images/normal.png'
+filename = 'hello_world.png'
+
+# headers
+print 'Content-Type: application/octet-stream; name="%s"' % filename
+print 'Content-Disposition: attachment; filename="%s"' % filename
+print "Content-Length: " + str(os.stat(fullpath).st_size)
+print    # empty line between headers and body
+#sys.stdout.flush() # send header faster
+
+try:
+    # body
+    with open(fullpath, 'rb') as fo: 
+        print fo.read()
+except Exception as e:
+    print 'Content-type:text/html'
+    print    # empty line between headers and body
+    print 'Exception:', e

CGI/simple-server-with-different-languages/server.py

@@ -4,6 +4,8 @@
 
 server_address = ("", 8000)
 
+print(server_address)
+
 httpd = HTTPServer(server_address, CGIHTTPRequestHandler)
 httpd.serve_forever()
 

requests/proxies/README.md

@@ -0,0 +1,10 @@
+Dla użytkowników TPSA
+217.98.20.20:8080 (w3cache.tpnet.pl)
+217.98.20.195:8080 (w3cache.tpnet.pl)
+
+Dla użytkowników NETIA
+195.114.161.53:8080
+195.114.161.54:8000
+
+Dla użytkowników Dialog
+62.87.244.55:8080 (w3cache.dialog.net.pl)

requests/stream-chunk-example/main.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+
+# example how to use stream
+
+# ---------------------------------------------------------------------
+# reading stream in chunks
+# ---------------------------------------------------------------------
+
+import requests
+
+url = 'http://httpbin.org/stream/1'
+
+r = requests.get(url, stream=True)
+
+
+if not r.ok:
+    print('Status code:', r.status_code)
+else:
+
+    # empty bytes data
+    data = b''
+    
+    for chunk in r.iter_content(32):
+        if chunk:  # filter out keep-alive new chunks
+            data += chunk
+            print(chunk.decode('utf-8'), '\n----')
+
+    # convert bytes to string and print
+    print(data.decode('utf-8'))
+
+# ---------------------------------------------------------------------
+# writing to file 
+# ---------------------------------------------------------------------
+
+import requests
+
+url = 'http://httpbin.org/stream/1'
+
+r = requests.get(url, stream=True)
+
+if not r.ok:
+    print('Status code:', r.status_code)
+else:
+
+    with open('output.txt', 'wb') as f:
+        for chunk in r.iter_content(32):
+            # not sure if `chunk` can be empty
+            if chunk:  # filter out keep-alive new chunks
+                f.write(chunk)
+                # flush python buffer and OS buffrer
+                #f.flush()
+                #os.fsync(f.fileno())
+
+# ---------------------------------------------------------------------
+# using Response.raw and shutil.copyfileobj()
+# ---------------------------------------------------------------------
+# http://docs.python-requests.org/en/master/api/#requests.Response.raw
+# https://docs.python.org/3/library/shutil.html#shutil.copyfileobj
+# ---------------------------------------------------------------------
+
+import requests
+import shutil
+
+url = 'http://httpbin.org/stream/1'
+
+r = requests.get(url, stream=True)
+
+if not r.ok:
+    print('Status code:', r.status_code)
+else:
+
+    with open'output.txt', 'wb') as f:
+        shutil.copyfileobj(r.raw, f)
+

requests/stream-chunk-example/output.txt

@@ -0,0 +1 @@
+{"url": "http://httpbin.org/stream/1", "headers": {"Host": "httpbin.org", "Accept-Encoding": "gzip, deflate", "Accept": "*/*", "User-Agent": "python-requests/2.11.1"}, "args": {}, "id": 0, "origin": "83.25.152.4"}

tkinter/button-calculator/example-1.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import tkinter as tk
+
+# --- functions ---
+
+def callback(x):
+    print(x)
+
+# --- main ---
+
+buttons = [
+  ("1", "2", "3", "+"),
+  ("4", "5", "6", "-"),
+  ("7", "8", "9", "*"),
+  (".", "0", "=", "/"),
+]
+
+root = tk.Tk()
+root.title("Calculator")
+root['bg'] = 'red'
+
+tk.Entry(root).grid(row=0, columnspan=4, sticky='we')
+
+for r, row in enumerate(buttons, 1):
+    for c, text in enumerate(row):
+        b = tk.Button(root, text=text, command=lambda arg=text:callback(arg))
+        b.grid(row=r, column=c, sticky='news')
+
+for col in range(4):
+    root.columnconfigure(col, weight=1)
+    root.rowconfigure(col+1, weight=1)
+
+root.mainloop()

tkinter/button-calculator/example-2.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+
+import tkinter as tk
+
+# --- functions ---
+
+def callback(x):
+    print(x)
+
+# --- main ---
+
+buttons = [
+  ("1", "2", "3", "+"),
+  ("4", "5", "6", "-"),
+  ("7", "8", "9", "*"),
+  (".", "0", "=", "/"),
+]
+
+root = tk.Tk()
+root.title("Calculator")
+
+tk.Entry(root).pack(fill='x')
+
+frame = tk.Frame(root)
+frame.pack(fill='both', expand=True)
+frame['bg'] = 'red'
+
+for col in range(4):
+    frame.columnconfigure(col, weight=1)
+    frame.rowconfigure(col+1, weight=1)
+
+for r, row in enumerate(buttons, 1):
+    for c, text in enumerate(row):
+        b = tk.Button(frame, text=text, command=lambda arg=text:callback(arg))
+        b.grid(row=r, column=c, sticky='news')
+
+root.mainloop()

tkinter/canvas-center-text-image/main.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+
+# http://effbot.org/tkinterbook/canvas.htm
+# http://effbot.org/tkinterbook/photoimage.htm
+
+import tkinter as tk
+from PIL import Image, ImageTk
+
+# --- constants ---
+
+WIDTH = 800
+HEIGHT = 600
+
+# --- functions ---
+
+def on_click():
+    w = int(c['width'])
+    h = int(c['height'])
+    print('minimal size:', w, h)
+
+    w = c.winfo_width()
+    h = c.winfo_height()
+    print('current size:', w, h)
+
+    c.coords(i, w//2, h//2)
+    c.coords(t, w//2, h//2)
+    
+    w = c.winfo_reqwidth()
+    h = c.winfo_reqheight()
+    print('    req size:', w, h)
+
+    # current position + (w//2, h//2)        
+    #c.move(t, w//2, h//2)
+    
+def on_resize(event):
+    # determine the ratio of old width/height to new width/height
+    w = event.width
+    h = event.height
+    print('event size:', w, h)
+
+    #w_scale = float(w)/width
+    #h_scale = float(h)/height
+    
+    # resize the canvas - doesn't work with `fill` and `expand`
+    #c.config(width=w, height=h)
+
+    c.coords(i, w//2, h//2)
+    c.coords(t, w//2, h//2)
+    
+    # rescale all the objects tagged with the "all" tag
+    #self.scale("all", 0, 0, w_scale,h_scale)
+    
+# --- main ---
+
+root = tk.Tk()
+
+c = tk.Canvas(root, width=WIDTH, height=HEIGHT)
+c.pack(fill='both', expand=True)
+c.bind("<Configure>", on_resize)
+
+# only GIF and PGM/PPM
+#photo = tk.PhotoImage(file='test.gif')
+
+# other formats
+image = Image.open('test_transparent.png')
+photo = ImageTk.PhotoImage(image)
+# use in functions - solution for "garbage collector" problem
+c.image = photo
+
+# text on image
+i = c.create_image((WIDTH//2, HEIGHT//2), image=photo)
+t = c.create_text((WIDTH//2, HEIGHT//2), text='Hello World')
+
+# (transparent) image on text
+#t = c.create_text((WIDTH//2, HEIGHT//2), text='Hello World')
+#i = c.create_image((WIDTH//2, HEIGHT//2), image=photo)
+
+b = tk.Button(root, text='OK', command=on_click)
+b.pack()
+
+root.mainloop()

tkinter/canvas-center-text-image/test.gif

@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+import tkinter as tk
+from PIL import Image, ImageTk
+
+# --- functions ---
+
+def on_click(event=None):
+    # `command=` calls function without argument (so I set event=None)
+    # `bind` calls function with one argument
+    if event:
+        print("Label clicked (x,y:", event.x, event.y, ')')
+    else:
+        print("Button clicked")
+
+# --- main ---
+    
+# init    
+root = tk.Tk()
+
+# load image
+image = Image.open("/home/furas/Obrazy/test.png")
+photo = ImageTk.PhotoImage(image)
+
+# label with image
+l = tk.Label(root, image=photo)
+l.pack()
+
+# bind click event to image
+l.bind('<Button-1>', on_click)
+
+# button with image binded to the same function 
+b = tk.Button(root, image=photo, command=on_click)
+b.pack()
+
+# button with text closing window
+b = tk.Button(root, text="Close", command=root.destroy)
+b.pack()
+    
+# "start the engine"
+root.mainloop()

tkinter/canvas-center-text-image/test.png

@@ -0,0 +1,3 @@
+To get ttk.Combobox state use `c['state'].string` or `str(c['state'])`
+
+See example in `main.py`

tkinter/canvas-center-text-image/test_transparent.png

@@ -0,0 +1,69 @@
+
+# http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/ttk-Widget.html
+# http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/ttk-state-spec.html
+
+try:
+    # Python 2
+    import Tkinter as tk
+    import ttk
+    print('Python 2')
+except:
+    # Python 3
+    import tkinter as tk
+    import tkinter.ttk as ttk
+    print('Python 3')
+
+def test():
+    all_states = ['disabled', 'readonly', 'pressed', 'focus']
+
+    print('----------------------------------------------------')
+
+    
+    c['state'] = tk.NORMAL
+
+    print('   info:', c['state'])
+    print('compare:', c['state'] == tk.NORMAL, c.cget('state') == tk.NORMAL)
+    print('instate:', c.instate(all_states), all_states)
+    print('instate:', c.instate(['disabled']), ['disabled'])
+    print('instate:', c.instate(['!disabled']), ['!disabled'])
+    print('state():', c.state())
+    print('  state:', c.state(all_states))
+    #print('  state:', c.state([tk.DISABLED]))
+    #print('state():', c.state())
+
+    print('---')
+    print('  normal:',   c['state'].string == tk.NORMAL, str(c['state']) == tk.NORMAL)
+    print('disabled:', c['state'].string == tk.DISABLED, str(c['state']) == tk.DISABLED)
+    print('readable:', c['state'].string == tk.READABLE, str(c['state']) == tk.READABLE)
+
+    print('----------------------------------------------------')
+
+    c['state'] = tk.DISABLED
+
+    print('   info:', c['state'])
+    print('compare:', c['state'] == tk.NORMAL, c.cget('state') == tk.NORMAL)
+    print('instate:', c.instate(all_states), all_states)
+    print('instate:', c.instate(['disabled']), ['disabled'])
+    print('instate:', c.instate(['!disabled']), ['!disabled'])
+    print('state():', c.state())
+    print('  state:', c.state(all_states))
+    print('  state:', c.state([tk.DISABLED]))
+    print('state():', c.state())
+
+    print('---')
+    print('  normal:',   c['state'].string == tk.NORMAL, str(c['state']) == tk.NORMAL)
+    print('disabled:', c['state'].string == tk.DISABLED, str(c['state']) == tk.DISABLED)
+    print('readable:', c['state'].string == tk.READABLE, str(c['state']) == tk.READABLE)
+
+
+root = tk.Tk()
+
+c = ttk.Combobox(root)
+c.pack()
+
+print('\n=== start ===\n')
+test()
+#print('\n=== after ===\n')
+#root.after(2000, test)
+
+root.mainloop()