Python - String, File, Regular Expression

-----------------

>>> ord(b'A')

65

>>> ord(b'!')

33

>>> list(b'Example')

[69, 120, 97, 109, 112, 108, 101]

>>> chr(65)

'A'

>>> chr(33)

'!'

>>>'This is an example, with punctuation and UPPERCASE.'.encode('ascii')

b'This is an example, with punctuation and UPPERCASE.'

>>> ascii = 'This is a test'.encode('ascii')

>>> ascii

b'This is a test'

>>> ascii.decode('utf-8')

{0}, {1}

>>> import os.path

>>> '{0:>20}{1}'.format(*os.path.splitext('contents.txt'))

'            contents.txt'

>>> for filename in ['contents.txt', 'chapter.txt', 'index.txt']:

... print('{0:<10}{1}'.format(*os.path.splitext(filename)))

contents .txt

chapter  .txt

index     .txt

>>> heading('Standard Format Specification')

'=====Standard Format Specification======'

>>> heading('This is a longer heading, beyond 40 characters')

'=This is a longer heading, beyond 40 characters='

>>> heading('Standard Format Specification', padding='-', width

'---------------Standard Format Specification----------------'

print string + str(123)

days = ["Mon","Tue","Wed","Thu","Fri","Sat","Sun"]

for i, d in enumerate(days):

    print i, d

0 Mon

1 Tue

2 Wed

3 Thu

4 Fri

5 Sat

6 Sun

-----------------

String and Parsing

http://www.tutorialspoint.com/python/string_find.htm

str1 = "this is string example....wow!!!";
str2 = "exam";

print str(len(str1))+ " " +str(len(str2))
print str1.find(str2)
print str1.find(str2, 10)
print str1.find(str2, 40)
print str1.find("this", 0, len(str1))

str = "Line1-abcdef \nLine2-abc \nLine4-abcd";
print str.split( )
print str.split(' ', 1 )

str1.capitalize()
str1.lower()
str1.upper()

-----------------

File

f = open("textfile.txt") # by default, read only
f = open("textfile.txt","r")
f = open("textfile.txt","w+")
f = open("textfile.txt","a+")

if f.mode == 'r': # check to make sure that the file was opened

txt = f.read() # read entire content

fl = f.readlines() # readlines reads the individual lines into a list
for x in fl:
  print x

# write some lines of data to the file
for i in range(10):
  f.write("This is line %d\r\n" % (i+1))

-----------------

File Path

import os
from os import path
import datetime
from datetime import date, time, timedelta
import time

def main():
  # Print the name of the OS
  print os.name
  
  # Check for item existence and type
  print "Item exists: " + str(path.exists("textfile.txt"))
  print "Item is a file: " + str(path.isfile("textfile.txt"))
  print "Item is a directory: " + str(path.isdir("textfile.txt"))
  
  # Work with file paths
  print "Item's path: " + str(path.realpath("textfile.txt"))
  print "Item's path and name: " + str(path.split(path.realpath("textfile.txt")))
  
  # Get the modification time
  t = time.ctime(path.getmtime("textfile.txt"))
  print t
  print datetime.datetime.fromtimestamp(path.getmtime("textfile.txt"))
  
  # Calculate how long ago the item was modified
  td= datetime.datetime.now() - datetime.datetime.fromtimestamp(path.getmtime("textfile.txt"))
  print "It has been " + str(td) + "The file was modified"
  print "Or, " + str(td.total_seconds()) + " seconds"
  
if __name__ == "__main__":
  main()

-----------------

Regular Expression

import time, os, re
# display time corresponding to your location
print(time.ctime())
f=open("sink_info.txt")
txt = f.read()
#AU_LINUX_ANDROID_LA.BF64.1.2.2.05.01.01.110.103
result = re.search("AU_LINUX_ANDROID_LA.\w+.\d.\d.\d.\d{2}.\d{2}.\d{2}.\d{3}.\d{3}", txt)
#result = re.search("AU_LINUX_ANDROID_LA.(HB|BF64).[0-9].[0-9].[0-9].[0-9]{2}.[0-9]{2}.[0-9]{2}.[0-9]{3}.[0-9]{3}", txt)
print result
if result:
	tmp1=result.group(0)
	#tmp2=result.group(1)
	print tmp1
	#print tmp2

#RUN SINK command with this AU