如何在python中按周绘制多个折线图

import matplotlib.pyplot as plt
import datetime

data = {
    'data1': {'2021-01-01': 10, '2021-01-08': 15, '2021-01-15': 12, ...},
    'data2': {'2021-01-01': 5, '2021-01-08': 8, '2021-01-15': 6, ...},
    ...
}

grouped_data = {}
for dataset, values in data.items():
    grouped_data[dataset] = {}
    for date_str, value in values.items():
        date = datetime.datetime.strptime(date_str, '%Y-%m-%d')
        week_number = date.strftime('%U')  # 获取周数
        if week_number in grouped_data[dataset]:
            grouped_data[dataset][week_number].append(value)
        else:
            grouped_data[dataset][week_number] = [value]

for dataset, values in grouped_data.items():
    weeks = list(values.keys())
    plt.plot(weeks, [sum(v)/len(v) for v in values.values()], label=dataset)

plt.xlabel('Week')
plt.ylabel('Average Value')
plt.title('Multiple Line Plots')
plt.legend()

plt.show()

import matplotlib.pyplot as plt
import datetime

data = {
    'data1': {'2021-01-01': 10, '2021-01-08': 15, '2021-01-15': 12},
    'data2': {'2021-01-01': 5, '2021-01-08': 8, '2021-01-15': 6},
}

grouped_data = {}
for dataset, values in data.items():
    grouped_data[dataset] = {}
    for date_str, value in values.items():
        date = datetime.datetime.strptime(date_str, '%Y-%m-%d')
        week_number = date.strftime('%U')
        if week_number in grouped_data[dataset]:
            grouped_data[dataset][week_number].append(value)
        else:
            grouped_data[dataset][week_number] = [value]

for dataset, values in grouped_data.items():
    weeks = list(values.keys())
    plt.plot(weeks, [sum(v)/len(v) for v in values.values()], label=dataset)

plt.xlabel('Week')
plt.ylabel('Average Value')
plt.title('Multiple Line Plots')
plt.legend()
plt.show()