Python print all floats to 2 decimal places in output

Question

I need to output 4 different floats to two decimal places   This is what I have   print    2f    var1  kg       2f    var2  lb       2f    var3  gal       2f    var4  l    Which is very unclean  and looks bad  Is there a way to make any float in that out put    2f     Note  Using Python 2 6

User · Answer

If you are looking for readability  I believe that this is that code   print    kg  2f kg     lb  2f lb     gal  2f gal     l  2f l           kg   var1       lb   var2       gal   var3       l   var4

User · Answer

If what you want is to have the print operation automatically change floats to only show 2 decimal places  consider writing a function to replace  print    For instance   def fp  args      fp means  floating print      tmps          for arg in args          if type arg  is float  arg   round arg  2     transform only floats         tmps append str arg       print     join tmps    Use fp   in place of print      fp  PI is   3 14159      instead of     print  PI is   3 14159

User · Answer

Format String Syntax   https   docs python org 3 library string html formatstrings  from math import pi var1  var2  var3  var4   pi  pi 2  pi 3  pi 4    0 2f   kg   0 2f   lb   0 2f   gal   0 2f   format var1  var2  var3  var4    The output would be    3 14  kg 6 28  lb 9 42  gal 12 57

User · Answer

Not directly in the way you want to write that  no  One of the design tenets of Python is  Explicit is better than implicit   see import this   This means that it s better to describe what you want rather than having the output format depend on some global formatting setting or something   You could of course format your code differently to make it look nicer   print            2f    var1           kg        2f    var2           lb        2f    var3           gal       2f    var4           l

User · Answer

Well I would atleast clean it up as follows   print    2f kg     2f lb     2f gal     2f l     var1  var2  var3  var4

User · Answer

If you just want to convert the values to nice looking strings do the following    twodecimals       2f    v for v in vars    Alternatively  you could also print out the units like you have in your question   vars    0  1  2  3    just some example values units     kg    lb    gal    l   delimiter          or however you want the values separated  print delimiter join     2f  s     v u  for v u in zip vars  units    Out 189    0 00 kg  1 00 lb  2 00 gal  3 00 l    The second way allows you to easily change the delimiter  tab  spaces  newlines  whatever  to suit your needs easily  the delimiter could also be a function argument instead of being hard-coded   Edit  To use your  name   value  syntax simply change the element-wise operation within the list comprehension   print delimiter join    s     2f     u v  for v u in zip vars  units    Out 190    kg   0 00  lb   1 00  gal   2 00  l   3 00

User · Answer

I have just discovered the round function - it is in Python 2 7  not sure about 2 6  It takes a float and the number of dps as arguments  so round 22 55555  2  gives the result 22 56

[python] Python, print all floats to 2 decimal places in output

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