PyMOL

PyMOL is a user-sponsored molecular visualization system on an open-source foundation, maintained and distributed by Schrödinger.

Top 5 Python Web Frameworks

1) Django

Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
Ridiculously fast + Reassuringly secure + Exceedingly scalable


TurboGears 2 is a reinvention of the TurboGears project to take advantage of new components, and to provide a fully customizable WSGI (Web Server Gateway Interface) stack. 


Free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications. Written and programmable in Python

4) Flask

Flask is a Python framework available under the BSD license. It was inspired by the Sinatra Ruby framework. Flask depends on the Werkzeug WSGI toolkit and Jinja2template.

 5)Bottle

Bottle is a microframework. Originally meant for building APIs, Bottle implements everything in a single source file. It has no dependencies apart from the Python Standard Library. Coding with Bottle gets you closer to the metal than coding with any full-stack framework.

Snake game using python program

 #To install pygame package "pip install pygame" in python Terminal

 
import pygame, random, sys
from pygame.locals import *
def collide(x1, x2, y1, y2, w1, w2, h1, h2):
      if x1+w1>x2 and x1<x2+w2 and y1+h1>y2 and y1<y2+h2:return True
      else:return False
def die(screen, score):
      f=pygame.font.SysFont('Arial', 30);t=f.render('Your score was: '+str(score), True, (0, 0, 0));screen.blit(t, (10, 270));pygame.display.update();pygame.time.wait(2000);sys.exit(0)
xs = [290, 290, 290, 290, 290];ys = [290, 270, 250, 230, 210];dirs = 0;score = 0;applepos = (random.randint(0, 590), random.randint(0, 590));pygame.init();s=pygame.display.set_mode((600, 600));pygame.display.set_caption('Snake');appleimage = pygame.Surface((20, 20));appleimage.fill((0, 0, 255));img = pygame.Surface((20, 20));img.fill((255, 0, 0));f = pygame.font.SysFont('Arial', 20);clock = pygame.time.Clock()
while True:
      clock.tick(10)
      for e in pygame.event.get():
            if e.type == QUIT:
                  sys.exit(0)
            elif e.type == KEYDOWN:
                  if e.key == K_UP and dirs != 0:dirs = 2
                  elif e.key == K_DOWN and dirs != 2:dirs = 0
                  elif e.key == K_LEFT and dirs != 1:dirs = 3
                  elif e.key == K_RIGHT and dirs != 3:dirs = 1
      i = len(xs)-1
      while i >= 2:
            if collide(xs[0], xs[i], ys[0], ys[i], 20, 20, 20, 20):die(s, score)
            i-= 1
      if collide(xs[0], applepos[0], ys[0], applepos[1], 20, 10, 20, 10):score+=1;xs.append(700);ys.append(700);applepos=(random.randint(0,590),random.randint(0,590))
      if xs[0] < 0 or xs[0] > 580 or ys[0] < 0 or ys[0] > 580: die(s, score)
      i = len(xs)-1
      while i >= 1:
            xs[i] = xs[i-1];ys[i] = ys[i-1];i -= 1
      if dirs==0:ys[0] += 20
      elif dirs==1:xs[0] += 20
      elif dirs==2:ys[0] -= 20
      elif dirs==3:xs[0] -= 20     
      s.fill((255, 255, 255))
      for i in range(0, len(xs)):
            s.blit(img, (xs[i], ys[i]))
      s.blit(appleimage, applepos);t=f.render(str(score), True, (0, 0, 0));s.blit(t, (10, 10));pygame.display.update()