Combining functions

Collections

A collection of pre-define APIs to help users combine collection data, like list, array, tuple

parfun.combine.collection.list_concat(values: Iterable[List[ListValue]]) → List[ListValue]

Chains a collection of lists in a single list.

list_concat([[1,2], [3], [4, 5]]) # [1, 2, 3, 4, 5]

Dataframes

A collection of pre-define APIs to help users combine Pandas’ Dataframe data

parfun.combine.dataframe.df_concat(dfs: Iterable[DataFrame]) → DataFrame

Similar to pandas.concat().

df_1 = pd.DataFrame([1,2,3])
df_2 = pd.DataFrame([4,5,6])

print(df_concat([df_1, df_2]))
#    0
# 0  1
# 1  2
# 2  3
# 3  4
# 4  5
# 5  6