In Mac, you can use Preview to join multiple pdf files into a single pdf file. A more convenient way is to join/merge multiple pdf files from command line on Terminal. More recent Mac OS X versions already have Python script to merge multiple pdf files into a single pdf file. Here is how to […]
Python
How to Fold a Long Single Line Text to Multiple Lines (in Python and Linux)?
You might want to convert a really long string in a single line into multiple lines with specified width. For example, if you have string like 12345678912345678912345678912345678912345678910 and want to split the long text to multi-line text, where each line is of length w, like w=9 123456789 123456789 123456789 123456789 123456789 10 In the above […]
“with” statement in Python to Open a file
A common way to work with files in Python is to create file handler with “open” statement and work with the file. After finishing the work with the file, we need to close the file handler with close statement. For example, if we want to read all lines of a file using Python , we use […]
How to Run a Shell Command from Python and Get The Output?
In Python, often you may want to execute linux command and get the output of the command as string variable. There are multiple ways to execute shell command and get output using Python. A naive way to do that is to execeute the linux command, save the output in file and parse the file. Get […]
Eleven IPython Keyboard Shortcuts to Move Around Easily
Eleven IPython keyboard tips/shortcuts to Move Around Easily. Ctrl-p or up-arrow: Access command history in backward Ctrl-n or down-arrow: Access command history in forward Ctrl-a: Move cursor to beginning of line Ctrl-e: Move cursor to end of line Ctrl-f: Move cursor forward one character Ctrl-b: Move cursor back one character Ctrl-l: Clear screen Ctrl-r: reverse history […]