How to add key value pair to dictionary

Question

How to add key value pair to dictionary  Below i have mentioned following format     1 somemessage     3L                      1L                      u AAA                       1689544L                      datetime datetime 2010  9  21  22  30                       u gffggf                        3L                      1L                      u BBB                       1689544L                      datetime datetime 2010  9  21  20  30                       u ffgffgfg                        3L                      1L                      u CCC                       1689544L                      datetime datetime 2010  9  21  22  30                       u hjhjhjhj                        3L                      1L                      u DDD                       1689544L                      datetime datetime 2010  9  21  21  45                       u jhhjjh       2 somemessage     4L                      1L                      u AAA                       1689544L                      datetime datetime 2010  9  21  22  30                       u gffggf                        4L                      1L                      u BBB                       1689544L                      datetime datetime 2010  9  21  20  30                       u ffgffgfg                        4L                      1L                      u CCC                       1689544L                      datetime datetime 2010  9  21  22  30                       u hjhjhjhj                        4L                      1L                      u DDD                       1689544L                      datetime datetime 2010  9  21  21  45                       u jhhjjh

User · Answer

For quick reference  all the following methods will add a new key  a  if it does not exist already or it will update the existing key value pair with the new value offered   data  a   1    data update   a  1    data update dict a 1    data update a 1    You can also mixing them up  for example  if key  c  is in data but  d  is not  the following method will updates  c  and adds  d   data update   c  3  d  4

User · Answer

I am not sure what you mean by  dynamic   If you mean adding items to a dictionary at runtime  it is as easy as dictionary key    value    If you wish to create a dictionary with key value to start with  at compile time  then use  surprise     dictionary key    value

User · Answer

Add a key  value pair to dictionary   aDict      aDict key    value   What do you mean by dynamic addition

User · Answer

I got here looking for a way to add a key value pair s  as a group - in my case it was the output of a function call  so adding the pair using dictionary key    value would require me to know the name of the key s    In this case  you can use the update method  dictionary update function that returns a dict  args    kwargs     Beware  if dictionary already contains one of the keys  the original value will be overwritten

User · Answer

If you want to add a new record in the form  newRecord    4L  1L  u DDD   1689544L  datetime datetime 2010  9  21  21  45   u jhhjjh     to messageName where messageName in the form X somemessage can  but does not have to be in your dictionary  then do it this way   myDict setdefault messageName      append newRecord    This way it will be appended to an existing messageName or a new list will be created for a new messageName

User · Answer

May be some time this also will be helpful  import collections  Write you select statement here and other things to fetch the data   if rows              JArray                  for row in rows                   JArray2   collections OrderedDict                   JArray2  id    str row  id                    JArray2  Name    row  catagoryname                   JArray append JArray2               return json dumps JArray    Example Output                    id   14          Name    someName1                        id   15          Name    someName2

User · Answer

To insert append to a dictionary    0     travelkey   value    travelkey2   value    1    travelkey   value   travelkey2   value      travel dict     initialize dicitionary  travel key 0  initialize counter  if travel key not in travel dict   for avoiding keyerror 0     travel dict travel key       travel temp  val  key    no flexible     travel dict travel key  update travel temp    Updates if val  key   exists  else adds val  key   travel key travel key 1

[python] How to add key,value pair to dictionary?

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