我正在使用代码（由Marco Bonzanini编写）来绘制一段时间内推文的频率。我的推文包含在JSONL文件中。不幸的是，当在终端中运行代码时，我得到上面提到的错误。如何操作代码以便Numpy可以正确转换日期时间？
（我使用Python 3.6，我也确实看到了类似的问题，但我不知道如何将答案纳入代码中，因为它完全不同）。
import sys
import json
from datetime import datetime
import matplotlib.pyplot as plt
import matplotlib.dates as mdates
import pandas as pd
import numpy as np
import pickle
if __name__ == '__main__':
fname = sys.argv[1]
with open(fname, 'r') as f:
all_dates = []
for line in f:
tweet = json.loads(line)
all_dates.append(tweet.get('created_at'))
idx = pd.DatetimeIndex(all_dates)
ones = np.ones(len(all_dates))
# the actual series (at series of 1s for the moment)
my_series = pd.Series(ones, index=idx)
# Resampling / bucketing into 1-minute buckets
per_minute = my_series.resample('1Min', how='sum').fillna(0)
# Plotting the series
fig, ax = plt.subplots()
ax.grid(True)
ax.set_title("Tweet Frequencies")
hours = mdates.MinuteLocator(interval=20)
date_formatter = mdates.DateFormatter('%H:%M')
datemin = datetime(2011, 10, 31, 15, 0)
datemax = datetime(2017, 10, 31, 18, 0)
ax.xaxis.set_major_locator(hours)
ax.xaxis.set_major_formatter(date_formatter)
ax.set_xlim(datemin, datemax)
max_freq = per_minute.max()
ax.set_ylim(0, max_freq)
ax.plot(per_minute.index, per_minute)
plt.savefig('tweet_time_series.png')
Json Lines Data看起来像这样（两条推文，第二行从：{＆＃34; created_at＆＃34;：＆＃34; 10月24日星期五......）
{＆＃34; created_at＆＃34;：＆＃34; Fri Oct 24 20:21:15 +0000 2014＆＃34;，＆＃34; id＆＃34;：525743844839522305，＆＃34; id_str＆＃34 ;：＆＃34; 525743844839522305＆＃34;，＆＃34;文本＆＃34 ;:＆＃34; \ u0628 \ u0644 \ u0623 \ u0645 \ u0644 \ u0627 \ u064b \ u0648 \ u0634 \ u0645 \ u0633 \ u0627 \ u0648 \ u0642 \ u0645 \ u062d \ u0627 \ n \ u062a \ u0639 \ u0644 \ u0645 \ u0646 \ u0627 \ u0645 \ u0646 \ u0643 \ u0633 \ u064a \ u062f \ u064a \ u0628 \ u0633 \ u0637 \ u0627 \ u0644 \ u0631 \ u0648 \ u062d \ u0648 \ u0627 \ u0644 \ u0643 \ u0641 \ u0646 \ n \ u0648 \ u062a \ u0639 \ u0644 \ u0645 \ u0646 \ u0627 \ u0645 \ u0627 \ u0645 \ u0639 \ u0646 \ u0649 \ u0627 \ u0644 \ u0648 \ u0637 \ u0646 \ n \ u0641 \ u0645 \ u0648 \ u0627 \ u062d \ u062f \ u064a \ u0643 \ u0641 \ u064a \ u0644 \ u0643 \ u0644 \ u0627 \ u0644 \ u0644 \ u063a \ u0627 \ u062a \ n \ u0637 \ u0627 \ u0644 \ u0645 \ u0627 \ u0627 \ u0646 \ u0627 \ u0644 \ u0645 \ u0648 \ u062a \ u062d \ u0627 \ u0644 \ u0629 \ u0645 \ u0646 \ u062d \ u0627 \ u0644 \ u0627 \ u062a \ u0627 \ u0644 \ u062d \ u064a \ u0627 \ u0629＆＃34;，＆＃34;截断＆＃34;：false，＆＃34;实体＆＃34;：{＆＃34; hashtags＆＃34;：[]，＆＃34;符号＆＃34;：[] ，＆＃34; user_mentions＆＃34;：[]，＆＃34;网址＆＃34;：[]}，＆＃34;来源＆＃34;：＆＃34; http：//twitter.com/download/iphone \＆＃34; rel = \＆＃34; nofollow \＆＃34;＆gt; Twitter for iPhone＆＃34;，＆＃34; in_reply_to_status_id＆＃34;：null，＆＃34; in_reply_to_status_id_str＆＃34;：null，＆＃34; in_reply_to_user_id＆＃ 34;：null，＆＃34; in_reply_to_user_id_str＆＃34;：null，＆＃34; in_reply_to_screen_name＆＃34;：null，＆＃34; user＆＃34;：{＆＃34; id＆＃34;：1948848392，＆＃ 34; id_str＆＃34;：＆＃34; 1948848392＆＃34;，＆＃34; name＆＃34;：＆＃34; Ali Bazzi＆＃34;，＆＃34; screen_name＆＃34;：＆＃34; ViceAliBazzi＆＃ 34;，＆＃34; location＆＃34;：＆＃34;＆＃34;，＆＃34; description＆＃34;：＆＃34; \ u0645 \ u0627 \ u0632 \ u0627 \ u0644 \ u0647 \ u0646 \ u0627 \ u0643 \ u0623 \ u0645 \ u0644 \ u064a \ u0633 \ u062a \ u0648 \ u0637 \ u0646 \ u062a \ u062c \ u0627 \ u0639 \ u064a \ u062f \ u0627 \ u0644 \ u0633 \ u0646 \ u064a \ u0646。＆＃ 34;，＆＃34; url＆＃34;：null，＆＃34; entity＆＃34;：{＆＃34; description＆＃34;：{＆＃34; urls＆＃34;：[]}}，＆＃ 34; protected＆＃34;：false，＆＃34; followers_count＆＃34;：34918，＆＃34; friends_count＆＃34;：362，＆＃34; listed_count＆＃34;：13，＆＃34; created_at＆＃34; ：＆＃34; Wed Oct 09 07:55:26 +0000 2013＆＃34;，＆＃34; favourites_count＆＃34;：6016，＆＃34; utc_offse t＆＃34;：null，＆＃34; time_zone＆＃34;：null，＆＃34; geo_enabled＆＃34;：true，＆＃34;已验证＆＃34;：false，＆＃34; statuses_count＆＃34;：5188 ，＆＃34; lang＆＃34;：＆＃34; en＆＃34;，＆＃34; contributors_enabled＆＃34;：false，＆＃34; is_translator＆＃34;：false，＆＃34; is_translation_enabled＆＃34;： false，＆＃34; profile_background_color＆＃34;：＆＃34; C0DEED＆＃34;，＆＃34; profile_background_image_url＆＃34;：＆＃34; http://abs.twimg.com/images/themes/theme1/bg.png＆＃34;，＆＃34; profile_background_image_url_https＆＃34 ;：＆＃34; https://abs.twimg.com/images/themes/theme1/bg.png＆＃34;，＆＃34; profile_background_tile＆＃34;：false，＆＃34; profile_image_url＆＃34;：＆＃34; http://pbs.twimg.com/profile_images/883631999499612161/6Y9QbL52_normal.jpg＆＃34;， ＆＃34; profile_image_url_https＆＃34;：＆＃34; https://pbs.twimg.com/profile_images/883631999499612161/6Y9QbL52_normal.jpg＆＃34;，＆＃34; profile_banner_url＆＃34;：＆＃34; https://pbs.twimg.com/profile_banners/1948848392/1415834468＆＃34;，＆＃34; profile_link_color＆＃34;：＆＃34; 1DA1F2＆＃34;，＆＃34; profile_sidebar_border_color＆＃34;：＆＃34; C0DEED＆＃34;，＆＃34; profile_sidebar_fill_color＆＃34;：＆＃34; DDEEF6＆＃34;， ＆＃34; profile_text_color＆＃34;：＆＃34; 333333＆＃34;，＆＃34; profile_use_background_image＆＃34;：true，＆＃34; has_extended_profile＆＃34;：false，＆＃34; default_profile＆＃34;：true ，＆＃34; default_profile_image＆＃34;：false， ＆＃34;跟随＆＃34;：false，＆＃34; follow_request_sent＆＃34;：false，＆＃34; notifications＆＃34;：false，＆＃34; translator_type＆＃34;：＆＃34; none＆＃34; }，＆＃34; geo＆＃34;：null，＆＃34; coordinates＆＃34;：null，＆＃34; place＆＃34 ;: null，＆＃34; contributors＆＃34;：null，＆＃34; is_quote_status＆＃34;：false，＆＃34; retweet_count＆＃34;：14，＆＃34; favorite_count＆＃34;：21，＆＃34; favited＆＃34;：false，＆＃34;转发＆＃34;：false ，＆＃34; lang＆＃34;：＆＃34; ar＆＃34;} {＆＃34; created_at＆＃34;：＆＃34; Fri Oct 24 20:18:39 +0000 2014＆＃34;，＆＃34; id＆＃34;：525743192868519936，＆＃34; id_str＆＃34;：＆ ＃34; 525743192868519936＆＃34;，＆＃34;文本＆＃34 ;:＆＃34; \ u0645 \ u0646 \ u0630 \ u0643 \ u0631 \ u0628 \ u0644 \ u0627 \ u0621 \ u0648 \ u0646 \ u062d \ u0646 \ u0646 \ u0639 \ u0634 \ u0642 \ u0627 \ u0644 \ u062e \ u064a \ u0631 \ u0648 \ u0627 \ u0644 \ u0623 \ u0646 \ u0628 \ u064a \ u0627 \ u0621 \ n \ u062f \ u0645 \ u0646 \ u0627 \ u0639 \ u0644 \ u0649 \ u0627 \ u0644 \ u0648 \ u062f \ u064a \ u0627 \ u0646 \ n \ u0648 \ u0623 \ u0634 \ u0644 \ u0627 \ u0624 \ u0646 \ u0627 \ u0645 \ u0639 \ u0644 \ u0642 \ u0629 \ u0628 \ u064a \ u0646 \ u0627 \ u0644 \ u0648 \ u062c \ u0639 \ u0648 \ u0627 \ u0644 \ u0633 \ u0645 \ u0627 \ u0621 \ n \ u062a \ u0639 \ u0644 \ u0645 \ u0646 \ u0627 \ u0645 \ u0646 \ u0643 \ u0633 \ u064a \ u062f \ u064a \ u0627 \ u0646 \ u0627 \ u0644 \ u0645 \ u0648 \ u062a \ u0644 \ u0627 \ u064a \ u0635 \ u0646 \ u0639 \ u062c \ u0631 \ u062d \ u0627 \ N（\ u062a \ u0627 \ u0628 \ u0639）＆＃34 ;, ＆＃34;截断＆＃34;：false，＆＃34;实体＆＃34;：{＆＃34; hashtags＆＃34;：[]，＆＃34;符号＆＃34;：[]，＆＃34; user_mentions＆ ＃34;：[]，＆＃34; urls＆＃34;：[]}，＆＃34;所以urce＆＃34;：＆＃34; http：//twitter.com/download/iphone \＆＃34; rel = \＆＃34; nofollow \＆＃34;＆gt; Twitter for iPhone＆＃34;，＆＃34; in_reply_to_status_id＆＃34;：null，＆＃34; in_reply_to_status_id_str＆＃34;：null，＆＃34; in_reply_to_user_id＆＃ 34;：null，＆＃34; in_reply_to_user_id_str＆＃34;：null，＆＃34; in_reply_to_screen_name＆＃34;：null，＆＃34; user＆＃34;：{＆＃34; id＆＃34;：1948848392，＆＃ 34; id_str＆＃34;：＆＃34; 1948848392＆＃34;，＆＃34; name＆＃34;：＆＃34; Ali Bazzi＆＃34;，＆＃34; screen_name＆＃34;：＆＃34; ViceAliBazzi＆＃ 34;，＆＃34; location＆＃34;：＆＃34;＆＃34;，＆＃34; description＆＃34;：＆＃34; \ u0645 \ u0627 \ u0632 \ u0627 \ u0644 \ u0647 \ u0646 \ u0627 \ u0643 \ u0623 \ u0645 \ u0644 \ u064a \ u0633 \ u062a \ u0648 \ u0637 \ u0646 \ u062a \ u062c \ u0627 \ u0639 \ u064a \ u062f \ u0627 \ u0644 \ u0633 \ u0646 \ u064a \ u0646。＆＃ 34;，＆＃34; url＆＃34;：null，＆＃34; entity＆＃34;：{＆＃34; description＆＃34;：{＆＃34; urls＆＃34;：[]}}，＆＃ 34; protected＆＃34;：false，＆＃34; followers_count＆＃34;：34918，＆＃34; friends_count＆＃34;：362，＆＃34; listed_count＆＃34;：13，＆＃34; created_at＆＃34; ：＆＃34; Wed Oct 09 07:55:26 +0000 2013＆＃34;，＆＃34; favourites_count＆＃34;：6016，＆＃34; utc_offse t＆＃34;：null，＆＃34; time_zone＆＃34;：null，＆＃34; geo_enabled＆＃34;：true，＆＃34;已验证＆＃34;：false，＆＃34; statuses_count＆＃34;：5188 ，＆＃34; lang＆＃34;：＆＃34; en＆＃34;，＆＃34; contributors_enabled＆＃34;：false，＆＃34; is_translator＆＃34;：false，＆＃34; is_translation_enabled＆＃34;： false，＆＃34; profile_background_color＆＃34;：＆＃34; C0DEED＆＃34;，＆＃34; profile_background_image_url＆＃34;：＆＃34; http://abs.twimg.com/images/themes/theme1/bg.png＆＃34;，＆＃34; profile_background_image_url_https＆＃34 ;：＆＃34; https://abs.twimg.com/images/themes/theme1/bg.png＆＃34;，＆＃34; profile_background_tile＆＃34;：false，＆＃34; profile_image_url＆＃34;：＆＃34; http://pbs.twimg.com/profile_images/883631999499612161/6Y9QbL52_normal.jpg＆＃34;， ＆＃34; profile_image_url_https＆＃34;：＆＃34; https://pbs.twimg.com/profile_images/883631999499612161/6Y9QbL52_normal.jpg＆＃34;，＆＃34; profile_banner_url＆＃34;：＆＃34; https://pbs.twimg.com/profile_banners/1948848392/1415834468＆＃34;，＆＃34; 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