ValueError when using pandas date_range in for loop












0














I have an original dataset with projects containing data about its start date, end date, total value. I calculate dayvalue (dagwaarde) by dividing total value with amount of days.



I want to fill a dataset with data 1-1-2018 to 1-1-2020 with the sum of all day values of all projects for each day.



It all works, except for this piece:



df_date_range = pd.date_range(begin,einde)


which give this error: ValueError: NaTType does not support time



This is the code I use:



#Original DF with data about projects: startdatum (start), einddatum (end), dagwaarde (day value). 
#Day value is total value ('Value') / amount of days

Pipedrive['einddatum'] = pd.to_datetime(Pipedrive['einddatum'])
Pipedrive['startdatum'] = pd.to_datetime(Pipedrive['startdatum'])

Pipedrive['Days'] = Pipedrive['einddatum'].sub(Pipedrive['startdatum'], axis =0)
Pipedrive.head()
Pipedrive['Days'] = Pipedrive['Days'] / np.timedelta64(1, 'D')
Pipedrive['dagwaarde'] = Pipedrive['Value'] / Pipedrive['Days']

#Create DF to work with
Pipedrive_IN = Pipedrive[["stage_order_nr","dagwaarde",'einddatum', 'startdatum', 'Days' ]]

#make a list of all begin and end dates you want to have filled
begin = '2018-01-01' # start date
einde = '2020-01-01' # end date

#make a DF with a timedate index
datetimeindex = pd.date_range(begin,einde)
df_dates = pd.DataFrame(datetimeindex, columns=['date'])
df_dates = df_dates.set_index('date')
df_dates = df_dates.fillna(0)

for index, value in Pipedrive_IN.iterrows():
begin = value.startdatum # start date
einde = value.einddatum # end date
dagwaarde = value.dagwaarde # dagwaarde

#make DF with timedate index
df_date_range = pd.date_range(begin,einde)
df_proj = pd.DataFrame(df_date_range, columns=['date'])
df_proj['dagwaarde'] = dagwaarde
df_proj = df_proj.set_index('date')
df_proj=df_proj.dropna()
print(df_proj.head())

#add original DF to df_dates
df_dates = df_dates.join(df_proj,lsuffix='', rsuffix=index)
df_dates = df_dates.fillna(0)
print(df_dates.head(20))

#print result
df_dates['total']=df_dates.sum(axis=1)
print(df_dates.head(50))









share|improve this question



























    0














    I have an original dataset with projects containing data about its start date, end date, total value. I calculate dayvalue (dagwaarde) by dividing total value with amount of days.



    I want to fill a dataset with data 1-1-2018 to 1-1-2020 with the sum of all day values of all projects for each day.



    It all works, except for this piece:



    df_date_range = pd.date_range(begin,einde)


    which give this error: ValueError: NaTType does not support time



    This is the code I use:



    #Original DF with data about projects: startdatum (start), einddatum (end), dagwaarde (day value). 
    #Day value is total value ('Value') / amount of days

    Pipedrive['einddatum'] = pd.to_datetime(Pipedrive['einddatum'])
    Pipedrive['startdatum'] = pd.to_datetime(Pipedrive['startdatum'])

    Pipedrive['Days'] = Pipedrive['einddatum'].sub(Pipedrive['startdatum'], axis =0)
    Pipedrive.head()
    Pipedrive['Days'] = Pipedrive['Days'] / np.timedelta64(1, 'D')
    Pipedrive['dagwaarde'] = Pipedrive['Value'] / Pipedrive['Days']

    #Create DF to work with
    Pipedrive_IN = Pipedrive[["stage_order_nr","dagwaarde",'einddatum', 'startdatum', 'Days' ]]

    #make a list of all begin and end dates you want to have filled
    begin = '2018-01-01' # start date
    einde = '2020-01-01' # end date

    #make a DF with a timedate index
    datetimeindex = pd.date_range(begin,einde)
    df_dates = pd.DataFrame(datetimeindex, columns=['date'])
    df_dates = df_dates.set_index('date')
    df_dates = df_dates.fillna(0)

    for index, value in Pipedrive_IN.iterrows():
    begin = value.startdatum # start date
    einde = value.einddatum # end date
    dagwaarde = value.dagwaarde # dagwaarde

    #make DF with timedate index
    df_date_range = pd.date_range(begin,einde)
    df_proj = pd.DataFrame(df_date_range, columns=['date'])
    df_proj['dagwaarde'] = dagwaarde
    df_proj = df_proj.set_index('date')
    df_proj=df_proj.dropna()
    print(df_proj.head())

    #add original DF to df_dates
    df_dates = df_dates.join(df_proj,lsuffix='', rsuffix=index)
    df_dates = df_dates.fillna(0)
    print(df_dates.head(20))

    #print result
    df_dates['total']=df_dates.sum(axis=1)
    print(df_dates.head(50))









    share|improve this question

























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      I have an original dataset with projects containing data about its start date, end date, total value. I calculate dayvalue (dagwaarde) by dividing total value with amount of days.



      I want to fill a dataset with data 1-1-2018 to 1-1-2020 with the sum of all day values of all projects for each day.



      It all works, except for this piece:



      df_date_range = pd.date_range(begin,einde)


      which give this error: ValueError: NaTType does not support time



      This is the code I use:



      #Original DF with data about projects: startdatum (start), einddatum (end), dagwaarde (day value). 
      #Day value is total value ('Value') / amount of days

      Pipedrive['einddatum'] = pd.to_datetime(Pipedrive['einddatum'])
      Pipedrive['startdatum'] = pd.to_datetime(Pipedrive['startdatum'])

      Pipedrive['Days'] = Pipedrive['einddatum'].sub(Pipedrive['startdatum'], axis =0)
      Pipedrive.head()
      Pipedrive['Days'] = Pipedrive['Days'] / np.timedelta64(1, 'D')
      Pipedrive['dagwaarde'] = Pipedrive['Value'] / Pipedrive['Days']

      #Create DF to work with
      Pipedrive_IN = Pipedrive[["stage_order_nr","dagwaarde",'einddatum', 'startdatum', 'Days' ]]

      #make a list of all begin and end dates you want to have filled
      begin = '2018-01-01' # start date
      einde = '2020-01-01' # end date

      #make a DF with a timedate index
      datetimeindex = pd.date_range(begin,einde)
      df_dates = pd.DataFrame(datetimeindex, columns=['date'])
      df_dates = df_dates.set_index('date')
      df_dates = df_dates.fillna(0)

      for index, value in Pipedrive_IN.iterrows():
      begin = value.startdatum # start date
      einde = value.einddatum # end date
      dagwaarde = value.dagwaarde # dagwaarde

      #make DF with timedate index
      df_date_range = pd.date_range(begin,einde)
      df_proj = pd.DataFrame(df_date_range, columns=['date'])
      df_proj['dagwaarde'] = dagwaarde
      df_proj = df_proj.set_index('date')
      df_proj=df_proj.dropna()
      print(df_proj.head())

      #add original DF to df_dates
      df_dates = df_dates.join(df_proj,lsuffix='', rsuffix=index)
      df_dates = df_dates.fillna(0)
      print(df_dates.head(20))

      #print result
      df_dates['total']=df_dates.sum(axis=1)
      print(df_dates.head(50))









      share|improve this question













      I have an original dataset with projects containing data about its start date, end date, total value. I calculate dayvalue (dagwaarde) by dividing total value with amount of days.



      I want to fill a dataset with data 1-1-2018 to 1-1-2020 with the sum of all day values of all projects for each day.



      It all works, except for this piece:



      df_date_range = pd.date_range(begin,einde)


      which give this error: ValueError: NaTType does not support time



      This is the code I use:



      #Original DF with data about projects: startdatum (start), einddatum (end), dagwaarde (day value). 
      #Day value is total value ('Value') / amount of days

      Pipedrive['einddatum'] = pd.to_datetime(Pipedrive['einddatum'])
      Pipedrive['startdatum'] = pd.to_datetime(Pipedrive['startdatum'])

      Pipedrive['Days'] = Pipedrive['einddatum'].sub(Pipedrive['startdatum'], axis =0)
      Pipedrive.head()
      Pipedrive['Days'] = Pipedrive['Days'] / np.timedelta64(1, 'D')
      Pipedrive['dagwaarde'] = Pipedrive['Value'] / Pipedrive['Days']

      #Create DF to work with
      Pipedrive_IN = Pipedrive[["stage_order_nr","dagwaarde",'einddatum', 'startdatum', 'Days' ]]

      #make a list of all begin and end dates you want to have filled
      begin = '2018-01-01' # start date
      einde = '2020-01-01' # end date

      #make a DF with a timedate index
      datetimeindex = pd.date_range(begin,einde)
      df_dates = pd.DataFrame(datetimeindex, columns=['date'])
      df_dates = df_dates.set_index('date')
      df_dates = df_dates.fillna(0)

      for index, value in Pipedrive_IN.iterrows():
      begin = value.startdatum # start date
      einde = value.einddatum # end date
      dagwaarde = value.dagwaarde # dagwaarde

      #make DF with timedate index
      df_date_range = pd.date_range(begin,einde)
      df_proj = pd.DataFrame(df_date_range, columns=['date'])
      df_proj['dagwaarde'] = dagwaarde
      df_proj = df_proj.set_index('date')
      df_proj=df_proj.dropna()
      print(df_proj.head())

      #add original DF to df_dates
      df_dates = df_dates.join(df_proj,lsuffix='', rsuffix=index)
      df_dates = df_dates.fillna(0)
      print(df_dates.head(20))

      #print result
      df_dates['total']=df_dates.sum(axis=1)
      print(df_dates.head(50))






      python-3.x pandas for-loop date-range






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      asked Dec 28 '18 at 7:34









      MikeMike

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