Pythonでインスタグラムの投稿数/フォロワー数/フォロー数を記録する

instaloaderを利用した。

Pythonスクリプト

import datetime
import instaloader


# parameters
username = input('username: ')
logfile = 'logfile.log'

# load profile data
loader = instaloader.Instaloader()
profile = instaloader.Profile.from_username(loader.context, username)
posts = profile.mediacount
followers = profile.followers
following = profile.followees

# print results
print("Username  : {}".format(username))
print("Posts     : {}".format(posts))
print("Followers : {}".format(followers))
print("Following : {}".format(following))

# write results in logfile
today = datetime.date.today()
with open(logfile, 'a') as f:
    print(today.isoformat(),
          username, posts, followers, following, sep=',', file=f)

実行結果サンプル(標準出力)

Username  : （ユーザネーム）
Posts     : 7345
Followers : 609797472
Following : 41

実行結果サンプル(ファイル出力)

2023-02-27,（ユーザネーム）,7345,609797472,41

pandasとmatplotlibを使ってグラフ表示してみた。

Pythonスクリプト

import pandas as pd
import matplotlib.pyplot as plt
from matplotlib import dates as mdates
from datetime import datetime as dt

# parameters
data_file = 'logfile.log'
username = input('username: ')
# data frame
df = pd.read_csv(data_file).query('user == @username')
print(df.tail())
# convert x to time
xlist = []
xlist = [dt.strptime(d, '%Y-%m-%d') for d in df[df.columns[0]]]
# plot data
plt.close()
fig, ax = plt.subplots()
ax.plot(xlist, df[df.columns[3]], marker='o')
# set labels
ax.set_ylabel("followers")
labels = ax.get_xticklabels()
plt.setp(labels, rotation=45)
# set x-scale and format
ax.xaxis.set_major_locator(mdates.AutoDateLocator())
ax.xaxis.set_major_formatter(mdates.AutoDateFormatter("%Y-%m-%d"))
''' set x range if you need
start_time = dt.strptime('2023-2-1', '%Y-%m-%d')
end_time = dt.strptime('2023-3-31', '%Y-%m-%d')
ax.set_xlim([start_time, end_time])
'''
# show
plt.show()

実行結果

username: (user1)
          date     user  posts  followers  following
21  2023-02-15  (user1)    489        268         19
22  2023-02-16  (user1)    489        279         19
23  2023-02-20  (user1)    489        280         19
26  2023-02-23  (user1)    489        290         19
28  2023-02-28  (user1)    489        291         19

使用したサンプルデータ（logfile.log）

date,user,posts,followers,following
2023-02-01,(user1),489,270,19
2023-02-02,(user2),489,271,19
2023-02-05,(user1),489,275,19
2023-02-10,(user1),489,270,19
2023-02-11,(user2),489,271,19
2023-02-15,(user1),489,268,19
2023-02-16,(user1),489,279,19
2023-02-20,(user1),489,280,19
2023-02-21,(user3),489,288,19
2023-02-22,(user2),489,286,19
2023-02-23,(user1),489,290,19
2023-02-24,(user3),489,290,19
2023-02-28,(user1),489,291,19