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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Python formatting update - including named completions

As from Python 2.6, a format method has been introduced in addtion to the % operator on strings to provide a more flexible and improved way of convering objects (of various type) into strings. Select [here] to open the source in a new window which was used to get this result:

  munchkin:cambx grahamellis$ python3 earlier 
  How all are ya (in metres) 1.76
  How heavy are ya (in kgs) 74
  Your bmi is 23.889 if so
  Your bmi is 000023.889 if so
  Your bmi is     23.889 if so
  Your bmi is 23.889     if so
  Your bmi is   23.889   if so
  Your bmi is     23.889 if so
  Your bmi is 23.889462809917354 if so
  for height 1.76 and weight 74.0 the bmi is     23.889
  for height 1.76 and weight 74.0 the bmi is     23.889
  for height 1.76 and weight 74.0 the bmi is     23.889
  munchkin:cambx grahamellis$


This new format method on a string is what we recommend you use in Python 3 ... it has a much inreased flexibility, and indeed allows you to write much cleaner code too - for example by filling in format elements by name:

  print ("Your bmi is {result} if so".format(result=bmi))

or indeed

  result = {"height":h, "weight":w, "bmi":bmi}
  print ("for height {height} and weight {weight} the bmi is {bmi:10.3f}".format(**result))

(written 2015-12-10, updated 2015-12-09)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
Y108 - Python - String Handling
  [324] The backtick operator in Python and Perl - (2005-05-25)
  [463] Splitting the difference - (2005-10-13)
  [496] Python printf - (2005-11-15)
  [560] The fencepost problem - (2006-01-10)
  [773] Breaking bread - (2006-06-22)
  [903] Pieces of Python - (2006-10-23)
  [943] Matching within multiline strings, and ignoring case in regular expressions - (2006-11-25)
  [954] Splitting Pythons in Bradford - (2006-11-29)
  [970] String duplication - x in Perl, * in Python and Ruby - (2006-12-07)
  [1110] Python - two different splits - (2007-03-15)
  [1195] Regular Express Primer - (2007-05-20)
  [1517] Python - formatting objects - (2008-01-24)
  [1608] Underlining in Perl and Python - the x and * operator in use - (2008-04-12)
  [1876] Python Regular Expressions - (2008-11-08)
  [2284] Strings as collections in Python - (2009-07-12)
  [2406] Pound Sign in Python Program - (2009-09-15)
  [2692] Flexible search and replace in Python - (2010-03-25)
  [2721] Regular Expressions in Python - (2010-04-14)
  [2765] Running operating system commands from your Python program - (2010-05-14)
  [2780] Formatted Printing in Python - (2010-05-25)
  [2814] Python - splitting and joining strings - (2010-06-16)
  [3090] Matching to a string - what if it matches in many possible ways? - (2010-12-17)
  [3218] Matching a license plate or product code - Regular Expressions - (2011-03-28)
  [3349] Formatting output in Python through str.format - (2011-07-07)
  [3468] Python string formatting - the move from % to str.format - (2011-10-08)
  [3469] Teaching dilemma - old tricks and techniques, or recent enhancements? - (2011-10-08)
  [3796] Backquote, backtic, str and repr in Python - conversion object to string - (2012-07-05)
  [3886] Formatting output - why we need to, and first Python example - (2012-10-09)
  [4027] Collections in Python - list tuple dict and string. - (2013-03-04)
  [4152] Why are bus fares so high? - (2013-08-18)
  [4213] Formatting options in Python - (2013-11-16)
  [4307] Identifying and clearing denial of service attacks on your Apache server - (2014-09-27)
  [4360] Python - comparison of old and new string formatters - (2014-12-22)
  [4593] Command line parameter handling in Python via the argparse module - (2015-12-08)
  [4659] Prining a pound sign from Python AND running from the command line at the same time - (2016-03-03)


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Call for help counting passengers - TransWilts, 12th to 14th December
Python formatting update - including named completions
XML handling in Python - a new teaching example using etree
A comparison of the public transport alternatives to the Royal United Hospital, Bath - from Melksham.
From single block to structure and object oriented programming
Progress on moving from Python 2 to Python 3 - training for both versions
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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