Download youtube videos without any plugin or application

This is very simple technique to download the youtube videos without any software support or plugin in browser.

step 1: copy the url of video.

ex: https://www.youtube.com/watch?v=ulE2CbvCCG0

step 2: Omit the part 'https://www.' from url and  add 'ss' instead of it in url.

ie, ssyoutube.com/watch?v=ulE2CbvCCG0

step 3: Reload the browser.

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Barcode in RML Reports

Barcode in rml report:

<barCode code="code128" quiet="9" fontName="Times-Roman" barWidth="2.00" fontSize="350" alignment="CENTER">[[ o.reg_no ]]</barCode>

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Install VirtualBox in Ubuntu

To install virtualbox in ubuntu:

sudo apt-get install virtualbox-ose

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Install nautilus-open-terminal in Ubuntu

To get 'Open in Terminal' in right button option in Ubuntu, need to install nautilus-open-terminal.

command:

sudo apt-get install nautilus-open-terminal

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Generate random numbers in Python

Python random module helps to generate random numbers.
We can generate this in three ways

• randint(a, b)
• uniform(a, b)
• random()

randint(a, b) : returns a random integer number in the range [a, b]
uniform(a, b) : returns a floating point number in the range [a, b]
random() : returns a floating point number in the range [0, 1]

>>> import random
>>> a = random.randint(1,99)
>>> a
77
>>> b = random.uniform(1,999)
>>> b
766.6455229055509
>>> c = random.random()
>>> c
0.6372421095384033
>>>

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Convert PDF to JPEG Python

Convert pdf file to image file using 'PythonMagick' in Python. PythonMagick provides object oriented bindings for the ImageMagick Library. You can dowload PythonMagick

Ex:

>>> import PythonMagick
>>> pdf = 'Invoices.pdf'
>>> p = PythonMagick.Image()
>>> p.density('600')
>>> p.read(pdf)
>>> p.write('test_image.jpg')
>>>

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Date in Python and its Conversion

Current date in Python using 'time' module

>>> import time
>>> time.strftime("format")

Ex:

>>> import time
>>> time.strftime("%d-%m-%Y")
'20-05-2014'

>>> time.strftime("%d-%m-%Y %H:%M:%S")
'20-05-2014 12:17:51'

Current date in Python using 'datetime' module

>>> import datetime
>>> now = datetime.datetime.now()
>>> now
datetime.datetime(2014, 5, 20, 12, 19, 16, 547221)
>>> now.year
2014
>>> now.month
5
>>> now.day
20
>>> now.hour
12
>>> now.minute
19
>>> now.second
16
>>> now.microsecond
547221
>>>

Change date format using time module

syntax:

time.strftime('required format', time.strptime('date data', 'source format'))

Ex:

>>> import time
>>> d1 = time.strftime('%d-%m-%Y', time.strptime('2014-05-10', '%Y-%m-%d'))
>>> d1
'10-05-2014'
>>>

Convert date to datetime using datetime module

Ex:

>>> from datetime import datetime
>>> d1 = datetime.strftime(datetime.strptime('2014-05-10', '%Y-%m-%d'), "%Y-%m-%d 00:00:00")
>>> d1
'2014-05-10 00:00:00'
>>> d2 = datetime.strftime(datetime.strptime('2014-05-10', '%Y-%m-%d'), "%Y-%m-%d 23:59:59")
>>> d2
'2014-05-10 23:59:59'
>>> d1, d2
('2014-05-10 00:00:00', '2014-05-10 23:59:59')
>>>

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