split_df_by_month.py

def plot(df):
    fig = plt.figure()
    ax = fig.add_subplot(1,1,1)
    ax.hist(df['elapsed_time'], bins=100)
    ax.set_title('first histogram')
    ax.set_xlabel('x')
    ax.set_ylabel('freq')
    fig.show()

SUMMER_MONTH = [6, 7, 8]
WINTER_MONTH =  [12, 1, 2]

def season_split(df):
    summer_df = []
    winter_df = []
    for _e in zip(*[df[_col] for _col in df.columns.tolist()]):
        month  = iso2datetime(_e[6]).month
        if month in SUMMER_MONTH:
            summer_df.append(_e)
        elif month in WINTER_MONTH:
            winter_df.append(_e)
    summer_df =  pd.DataFrame(summer_df, columns=df.columns)
    winter_df = pd.DataFrame(winter_df, columns=df.columns)
    return summer_df, winter_df

summer_df_yabitu, winter_df_yabitu = season_split(df_yabitu)
plot(df_yabitu)
plot(summer_df_yabitu)
plot(winter_df_yabitu)

summer_df_jusan, winter_df_jusan = season_split(df_jusan)
plot(df_jusan)
plot(summer_df_jusan)
plot(winter_df_jusan)