Обработка текста

4.4.1.py

# -*- encoding: utf-8 -*-
"""
Сравнение текстов
"""
from difflib import get_close_matches
get_close_matches('appel', ['ape', 'apple', 'peach', 'puppy'])

import keyword
get_close_matches('wheel', keyword.kwlist)

get_close_matches('apple', keyword.kwlist)

get_close_matches('accept', keyword.kwlist)

text1 = """ 
Lavender's blue,
Diddle diddle,
Lavender's green,
When I am king,
Diddle diddle,
You shall be queen.
""" 

text2 = u""" 
Lavender's blue,
Lavender's green,
When I am king,
You shall be queen.
""" 

import difflib
for line in difflib.context_diff(text1, text2, fromfile='text1', tofile='text2'):
    sys.stdout.write(line)  

4.4.2.py

# -*- encoding: utf-8 -*-
"""
Регулярные выражения, поиск
"""
import re

line = "Cats are smarter than dogs";

matchObj = re.match( r'(.*) are(\.*)', line, re.M|re.I)

if matchObj:
   print "matchObj.group() : ", matchObj.group()
   print "matchObj.group(1) : ", matchObj.group(1)
   print "matchObj.group(2) : ", matchObj.group(2)
else:
   print "No match!!"

line = "Cats are smarter than dogs";

matchObj = re.match( r'dogs', line, re.M|re.I)
if matchObj:
   print "match --> matchObj.group() : ", matchObj.group()
else:
   print "No match!!" 

matchObj = re.search( r'dogs', line, re.M|re.I)
if matchObj:
   print "search --> matchObj.group() : ", matchObj.group()
else:
   print "No match!!" 

4.4.3.py

# -*- encoding: utf-8 -*-
"""
Регулярные выражения, подстановка
"""
import re

phone = "2004-959-559 #This is Phone Number" 
print phone
# Delete Python-style comments
num = re.sub(r'#.*$', "", phone)
print "Phone Num : ", num

# Remove anything other than digits
num = re.sub(r'\D', "", phone)    
print "Phone Num : ", num

4.4.4.py

# -*- encoding: utf-8 -*-
"""
Формат PDF: библиотека reportlab
"""
from reportlab.pdfgen import canvas

def hello(c):
    c.drawString(100,100,"Hello World")
c = canvas.Canvas("hello.pdf")
hello(c)
c.showPage()
c.save()

c = canvas.Canvas("hello.pdf")
def alpha(canvas):
    from reportlab.graphics.shapes import Rect
    from reportlab.lib.colors import Color, black, blue, red
    red50transparent = Color( 100, 0, 0, alpha=0.5)
    c = canvas
    c.setFillColor(black)
    c.setFont('Helvetica', 10)
    c.drawString(25,180, 'solid')
    c.setFillColor(blue)
    c.rect(25,25,100,100, fill=True, stroke=False)
    c.setFillColor(red)
    c.rect(100,75,100,100, fill=True, stroke=False)
    c.setFillColor(black)
    c.drawString(225,180, 'transparent')
    c.setFillColor(blue)
    c.rect(225,25,100,100, fill=True, stroke=False)
    c.setFillColor(red50transparent)
    c.rect(300,75,100,100, fill=True, stroke=False)

alpha(c)
c.showPage()
c.save()