Skip to content

pivot_table or pivot #1

Description

@Tetsuya1126

dfに重複データがなければ、pivotが利用可能

def _presence_from_events(
df: pd.DataFrame,
*,
event: str,
time_col: str = "datetime",
ip_col: str = "ip",
event_col: str = "event",
) -> pd.DataFrame:
"""
Event DataFrame → Presence(bool)

指定したイベント名の Presence Mask を作成する。

Parameters
----------
df : pd.DataFrame
    元データ

name : str
    イベント名
    例:
        "ASSURED"
        "SYN_RECV"
        "INVALID_CLIENTHELLO"
        "isolate"

event_col : str
    イベント名の列

time_col : str
    時刻列

ip_col : str
    IP列

Returns
-------
pd.DataFrame
    index   : datetime
    columns : ip
    values  : bool

    
"""

return (
    df.loc[df[event_col] == event]
    .assign(present=True)
    .pivot_table(
        index=time_col,
        columns=ip_col,
        values="present",
        aggfunc="any",
        fill_value=False,
    )
    .astype(bool)
    .sort_index()
)
'''
return (
    df.loc[df[event_col] == event, [time_col, ip_col]]
    .assign(present=True)
    .pivot(
        index=time_col,
        columns=ip_col,
        values="present",
    )
    .notna()
    .sort_index()
)
'''

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions