How can you dynamically create variables via a while loop

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I want to create variables dynamically via a while loop in Python  Does anyone have any creative means of doing this

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playing with globals   makes it possible   import random  alphabet   tuple  abcdefghijklmnopqrstuvwxyz     print   n  join repr u  for u in globals   if not u startswith         for i in xrange 8       globals      join random sample alphabet random randint 3 26       random choice alphabet   print  print   n  join repr  u globals   u    for u in globals   if not u startswith          one result    alphabet   random     hadmgoixzkcptsbwjfyrelvnqu    h     nzklv    o     alphabet     a    b    c    d    e    f    g    h    i    j    k    l    m    n    o    p    q    r    s    t    u    v    w    x    y    z      random    lt module  random  from  G  Python27 lib random pyc  gt     ckpnwqguzyslmjveotxfbadh    f     i   7    xwbujzkicyd    j     isjckyngxvaofdbeqwutl    n     wmt    g     aesyhvmw    q     azfjndwhkqgmtyeb    o     I used random because you don t explain which names of  variables  to give  and which values to create  Because i don t think it s possible to create a name without making it binded to an object

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Use the exec   method  For example  say you have a dictionary and you want to turn each key into a variable with its original dictionary value can do the following   Python 2   gt  gt  gt  c     one   1   two   2   gt  gt  gt  for k v in c iteritems           exec   s  s     k v     gt  gt  gt  one 1  gt  gt  gt  two 2   Python 3   gt  gt  gt  c     one   1   two   2   gt  gt  gt  for k v in c items           exec   s  s     k v     gt  gt  gt  one 1  gt  gt  gt  two 2

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vars    meta anio 2012      translate

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Stuffing things into the global and or local namespaces is not a good idea  Using a dict is so some-other-language-ish     d  constant-key     value just looks awkward  Python is OO  In the words of a master     Namespaces are one honking great idea -- let s do more of those      Like this    gt  gt  gt  class Record object           pass      gt  gt  gt  r   Record    gt  gt  gt  r foo    oof   gt  gt  gt  setattr r   bar    rab    gt  gt  gt  r foo  oof   gt  gt  gt  r bar  rab   gt  gt  gt  names    id description price  split    gt  gt  gt  values    666   duct tape   3 45   gt  gt  gt  s   Record    gt  gt  gt  for name  value in zip names  values           setattr s  name  value       gt  gt  gt  s   dict     If you are suffering from dict withdrawal symptoms   price   3 45   id   666   description    duct tape    gt  gt  gt

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Unless there is an overwhelming need to create a mess of variable names  I would just use a dictionary  where you can dynamically create the key names and associate a value to each   a      k   0 while k  lt  10       lt dynamically create key gt       key            lt calculate value gt       value           a key    value      k    1   There are also some interesting data structures in the new  collections  module that might be applicable   http   docs python org dev library collections html

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For free-dom   import random  alphabet   tuple  abcdefghijklmnopqrstuvwxyz    globkeys   globals   keys   globkeys append  globkeys     because name  globkeys  is now also in globals    print  globkeys    globkeys print print  globals   keys      globals   keys    for i in xrange 8       globals      join random sample alphabet random randint 3 26       random choice alphabet  del i  newnames     x for x in globals   keys   if x not in globkeys   print print  newnames    newnames  print print  globals   keys      globals   keys    print print   n  join repr  u globals   u    for u in newnames    Result  globkeys       builtins      alphabet    random      package        name        doc      globkeys    globals   keys         builtins      alphabet    random      package        name      globkeys      doc      newnames     fztkebyrdwcigsmulnoaph    umkfcvztleoij    kbutmzfgpcdqanrivwsxly    lxzmaysuornvdpjqfetbchgik    wznptbyermclfdghqxjvki    lwg    vsolxgkz    yobtlkqh    globals   keys       fztkebyrdwcigsmulnoaph    umkfcvztleoij    newnames    kbutmzfgpcdqanrivwsxly      builtins      alphabet    random    lxzmaysuornvdpjqfetbchgik      package      wznptbyermclfdghqxjvki    lwg    x    vsolxgkz      name      globkeys      doc      yobtlkqh      fztkebyrdwcigsmulnoaph    t     umkfcvztleoij    p     kbutmzfgpcdqanrivwsxly    a     lxzmaysuornvdpjqfetbchgik    n     wznptbyermclfdghqxjvki    t     lwg    j     vsolxgkz    w     yobtlkqh    c     Another way   import random  pool of names      for i in xrange 1000       v    LXM  str random randrange 10 100000       if v not in globals            pool of names append v   alphabet    abcdefghijklmnopqrstuvwxyz    print  globals   keys      globals   keys    print for j in xrange 8       globals   pool of names j     random choice alphabet  newnames   pool of names 0 j 1   print print  globals   keys      globals   keys    print print   n  join repr  u globals   u    for u in newnames    result   globals   keys         builtins      alphabet    random      package      i    v      name        doc      pool of names     globals   keys       LXM7646    random    newnames    LXM95826    pool of names    LXM66380    alphabet    LXM84070      package      LXM8644      doc      LXM33579      builtins        name      LXM58418    i    j    LXM24703    v      LXM66380    v     LXM7646    a     LXM8644    m     LXM24703    r     LXM58418    g     LXM84070    c     LXM95826    e     LXM33579    j

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Keyword parameters allow you to pass variables from one function to another  In this way you can use the key of a dictionary as a variable name  which can be populated in your while loop   The dictionary name just needs to be preceded by    when it is called     create a dictionary  gt  gt  gt  kwargs        add a key of name and assign it a value  later we ll use this key as a variable  gt  gt  gt  kwargs  name      python     an example function to use the variable  gt  gt  gt  def print name name         print name    call the example function  gt  gt  gt  print name   kwargs  python   Without     kwargs is just a dictionary    gt  gt  gt  print name kwargs    name    python

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NOTE  This should be considered a discussion rather than an actual answer   An approximate approach is to operate   main   in the module you want to create variables  For example there s a b py      usr bin env python   coding  utf-8   def set vars        import   main       print    main       main         main   B   1  try      print B except NameError as e      print e  set vars    print  B   s    B   Running it would output    python b py name  B  is not defined   main    lt module    main    from  b py  gt  B  1   But this approach only works in a single module script  because the   main   it import will always represent the module of the entry script being executed by python  this means that if b py is involved by other code   the B variable will be created in the scope of the entry script instead of in b py itself  Assume there is a script a py      usr bin env python   coding  utf-8  try      import b except NameError as e      print e  print  in a py  B   B   Running it would output    python a py name  B  is not defined   main    lt module    main    from  a py  gt  name  B  is not defined in a py  B 1   Note that the   main   is changed to  a py

[python] How can you dynamically create variables via a while loop?

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