How do I output lists as a table in Jupyter notebook

Question

I know that I ve seen some example somewhere before but for the life of me I cannot find it when googling around   I have some rows of data   data     1 2 3            4 5 6            7 8 9               And I want to output this data in a table  e g    --- --- ---    1   2   3    --- --- ---    4   5   6    --- --- ---    7   8   9    --- --- ---    Obviously I could use a library like prettytable or download pandas or something but I m very disinterested in doing that   I just want to output my rows as tables in my Jupyter notebook cell  How do I do this

User · Answer

Ok  so this was a bit harder than I though   def print matrix list of list       number width   len str max  max i  for i in list of list         cols   max map len  list of list       output         -   number width 2       cols     n      for row in list of list          for column in row              output                width d    format column  width   number width          output     n     -   number width 2       cols     n      return output   This should work for variable number of rows  columns and number of digits  for numbers   data     1 2 30            4 23125 6            7 8 999             print print matrix data   gt  gt  gt  gt  ------- ------- -------          1       2      30          ------- ------- -------          4     23125     6          ------- ------- -------          7       8      999         ------- ------- -------

User · Answer

I used to have the same problem  I could not find anything that would help me so I ended up making the class PrintTable--code below  There is also an output  The usage is simple   ptobj   PrintTable yourdata  column captions  column widths  text aligns  ptobj print     or in one line   PrintTable yourdata  column captions  column widths  text aligns  print     Output   -------------------------------------------------------------------------------------------------------------   Name                                       Column 1     Column 2     Column 3     Column 4     Column 5     -------------------------------------------------------------------------------------------------------------   Very long name 0                                    0            0            0            0            0     Very long name 1                                    1            2            3            4            5     Very long name 2                                    2            4            6            8           10     Very long name 3                                    3            6            9           12           15     Very long name 4                                    4            8           12           16           20     Very long name 5                                    5           10           15           20           25     Very long name 6                                    6           12           18           24           30     Very long name 7                                    7           14           21           28           35     Very long name 8                                    8           16           24           32           40     Very long name 9                                    9           18           27           36           45     Very long name 10                                  10           20           30           40           50     Very long name 11                                  11           22           33           44           55     Very long name 12                                  12           24           36           48           60     Very long name 13                                  13           26           39           52           65     Very long name 14                                  14           28           42           56           70     Very long name 15                                  15           30           45           60           75     Very long name 16                                  16           32           48           64           80     Very long name 17                                  17           34           51           68           85     Very long name 18                                  18           36           54           72           90     Very long name 19                                  19           38           57           76           95   -------------------------------------------------------------------------------------------------------------   The code for the class PrintTable    - - coding  utf-8 - -    Class class PrintTable      def   init   self  values  captions  widths  aligns       if not all  len values 0      len x  for x in  captions  widths  aligns             raise Exception       self  tablewidth   sum widths    3  len captions -1    4     self  values   values     self  captions   captions     self  widths   widths     self  aligns   aligns      def print self       self  printTable        def  printTable self       formattext head          formattext cell          for i v in enumerate self  widths           formattext head          str i       lt     str v                   formattext cell          str i          self  aligns i    str v               formattext head   formattext head  -3      formattext head          formattext head strip              formattext cell   formattext cell  -3      formattext cell          formattext cell strip               print  -  self  tablewidth      print formattext head format  self  captions       print  -  self  tablewidth      for w in self  values          print formattext cell format  w       print  -  self  tablewidth    Demonstration    Demonstration  headername     Column     format x  for x in range 6   headername 0     Name  data      Very long name     format x   x  x 2  x 3  x 4  x 5  for x in range 20     PrintTable data           headername            70  10  10  10  10  10               lt     gt     gt     gt     gt     gt     print

User · Answer

You could try to use the following function  def tableIt data       for lin in data          print   ---  len lin               for inlin in lin              print     str inlin      end             print          print   ---  len lin        data     1 2 3 2 3   1 2 3 2 3   1 2 3 2 3   1 2 3 2 3    tableIt data

User · Answer

I finally re-found the jupyter IPython documentation that I was looking for   I needed this   from IPython display import HTML  display  data     1 2 3            4 5 6            7 8 9              display HTML       lt table gt  lt tr gt    lt  tr gt  lt  table gt   format           lt  tr gt  lt tr gt   join               lt td gt    lt  td gt   format   lt  td gt  lt td gt   join str    for   in row   for row in data                 I may have slightly mucked up the comprehensions  but display HTML  some html here    is what we needed

User · Answer

If you don t mind using a bit of html  something like this should work   from IPython display import HTML  display  def display table data       html     lt table gt       for row in data          html      lt tr gt           for field in row              html      lt td gt  lt h4 gt  s lt  h4 gt  lt td gt    field          html      lt  tr gt       html      lt  table gt       display HTML html     And then use it like this  data     1 2 3   4 5 6   7 8 9   display table data

User · Answer

There is a nice trick  wrap the data with pandas DataFrame   import pandas as pd data     1  2    3  4   pd DataFrame data  columns   Foo    Bar      It displays data like       Foo   Bar   0   1     2     1   3     4

User · Answer

I recently used prettytable for rendering a nice ASCII table  It s similar to the postgres CLI output   import pandas as pd from prettytable import PrettyTable  data     1 2 3   4 5 6   7 8 9   df   pd DataFrame data  columns   one    two    three     def generate ascii table df       x   PrettyTable       x field names   df columns tolist       for row in df values          x add row row      print x      return x  generate ascii table df    Output    ----- ----- -------    one   two   three    ----- ----- -------     1     2      3        4     5      6        7     8      9      ----- ----- -------

User · Answer

I just discovered that tabulate has a HTML option and is rather simple to use  Quite similar to Wayne Werner s answer   from IPython display import HTML  display import tabulate table      Sun  696000 1989100000              Earth  6371 5973 6              Moon  1737 73 5              Mars  3390 641 85   display HTML tabulate tabulate table  tablefmt  html       Still looking for something simple to use to create more complex table layouts like with latex syntax and formatting to merge cells and do variable substitution in a notebook  Allow references to Python variables in Markdown cells  2958

User · Answer

A general purpose set of functions to render any python data structure  dicts and lists nested together  as HTML   from IPython display import HTML  display  def  render list html l       o          for e in l          o append   lt li gt  s lt  li gt      render as html e       return   lt ol gt  s lt  ol gt        join o   def  render dict html d       o          for k  v in d items            o append   lt tr gt  lt td gt  s lt  td gt  lt td gt  s lt  td gt  lt  tr gt      str k    render as html v        return   lt table gt  s lt  table gt        join o   def  render as html e       o          if isinstance e  list           o append  render list html e       elif isinstance e  dict           o append  render dict html e       else          o append str e       return   lt html gt  lt body gt  s lt  body gt  lt  html gt        join o   def render as html e       display HTML  render as html e

User · Answer

I want to output a table where each column has the smallest possible width  where columns are padded with white space  but this can be changed  and rows are separated by newlines  but this can be changed  and where each item is formatted using str  but         def ftable tbl  pad       sep   n   normalize str          normalize the content to the most useful data type     strtbl     normalize it  for it in row  for row in tbl          next  for each column we compute the maximum width needed     w    0 for   in tbl 0       for row in strtbl          for ncol  it in enumerate row               w ncol    max w ncol   len it          a string is built iterating on the rows and the items of  strtbl           items are  prepended white space to an uniform column width         formatted items are  join ed using  pad   by default               eventually we join the rows using newlines and return     return sep join pad join      wid-len it   it for wid  it in zip w  row                                                         for row in strtbl    The function signature  ftable tbl  pad       sep   n   normalize str   with its default arguments is intended to provide for maximum flexibility   You can customize   the column padding  the row separator   e g   pad   amp    sep       n  to have the bulk of a LaTeX table  the function to be used to normalize the input to a common string format --- by default  for the maximum generality it is str but if you know that all your data is floating point lambda item     4f  item could be a reasonable choice  etc      Superficial testing   I need some test data  possibly involving columns of different width so that the algorithm needs to be a little more sophisticated  but just a little bit    In  1   from random import randrange  In  2   table     randrange 10  randrange 10   for i in range 5   for j in range 3    In  3   table Out 3      974413992  510  0  3114  1     863242961  0  94924  782  34     1060993  62  26076  75832  833174    In  4   print ftable table   974413992  510      0   3114       1 863242961    0  94924    782      34   1060993   62  26076  75832  833174  In  5   print ftable table  pad       974413992 510     0  3114      1 863242961   0 94924   782     34   1060993  62 26076 75832 833174

User · Answer

tabletext fit this well  import tabletext  data     1 2 30            4 23125 6            7 8 999              print tabletext to text data    result    -----------------     1        2     30     --- ------- -----      4    23125      6     --- ------- -----      7        8    999     -----------------

[python] How do I output lists as a table in Jupyter notebook?

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