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====== Write Current Date and Time to File and Screen ======
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This Python 3 example will write the current date and time to a file. Useful information for any projects that require file writes or the use of date time.
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You can download the Python file {{ :datetime.zip |here}}:
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<sxh [py][; options for SyntaxHighlighter]>
    #!/usr/bin/python
    #
    # Python 3 Script
    #
    # Alan Walker
    # Aug 2016
    #
    #
    # Write current date and time to file and screen
    # Created to see how long Rpi would run from batteries
    # by comparing first and last date time in file
    #
    #
    
        
    from datetime import datetime    # Import Libraries
    import time
    
    var=1                      
    while var == 1:    # creates a never ending loop
        text = "{:%B %d %Y %H:%M:%S\n}".format(datetime.now())  # make the variable text = the current 
                                                                # date and     time.
        saveFile = open('blt.txt','a')                          # open file for append
        
        saveFile.write(text)                                    # write date and time (and a new line) to file
        saveFile.close()                                        # close the file
       
        print (text)                                            # print date and time (held in var called text)
                                                                # to screen
        time.sleep(30)                                          # sleep for x seconds
</sxh>    
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==== Example Output ====
August 11 2016 21:40:12\\ 
August 11 2016 21:40:42\\ 
August 11 2016 21:41:12\\ 
August 11 2016 21:41:42\\ 
August 11 2016 21:42:13\\ 
August 11 2016 21:42:43\\ 
August 11 2016 21:43:13\\ 
August 11 2016 21:43:43\\ 
August 11 2016 21:44:13\\ 
August 11 2016 21:44:43\\ 
August 11 2016 21:45:13\\ 
August 11 2016 21:45:43\\ 
August 11 2016 21:46:13\\ 
August 11 2016 21:46:43\\ 
August 11 2016 21:47:13\\ 
August 11 2016 21:47:43\\ 
August 11 2016 21:48:13\\ 
August 11 2016 21:48:43\\ 
August 11 2016 21:49:13\\ 
August 11 2016 21:49:43\\ 
August 11 2016 21:50:13\\ 
August 11 2016 21:50:43\\ 
August 11 2016 21:51:13\\ 
August 11 2016 21:51:43\\ 
August 11 2016 21:52:13\\ 
August 11 2016 21:52:43\\ 
August 11 2016 21:53:13\\ 
August 11 2016 21:53:43\\ 
August 11 2016 21:54:13\\ 
August 11 2016 21:54:43\\ 
August 11 2016 21:55:13\\ 
August 11 2016 21:55:43\\ 
August 11 2016 21:56:13\\ 
August 11 2016 21:56:43\\ 
August 11 2016 21:57:13\\ 
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