我有以下代码的问题。我得到一个错误“strptime()参数1必须是str,而不是Timestamp”
我想我应该做的是将日期从时间戳转换为字符串,但我不知道该怎么做。
class TweetAnalyzer:
def tweets_to_data_frame(self,ElonMuskTweets):
df = pd.DataFrame(data=[tweet.text for tweet in ElonMuskTweets],columns=['Tweets'])
df['Text length'] = np.array ([len(tweet.text)for tweet in ElonMuskTweets])
df['Date and time of creation'] = np.array ([tweet.created_at for tweet in ElonMuskTweets])
df['Likes'] = np.array ([tweet.favorite_count for tweet in ElonMuskTweets])
df['Retweets'] = np.array ([tweet.retweet_count for tweet in ElonMuskTweets])
list_of_dates = []
list_of_times = []
for date in df['Date and time of creation']:
date_time_obj = datetime.strptime(date, '%Y-%m-%d %H:%M:%S')
list_of_dates.append(date_time_obj.date())
list_of_times.append(date_time_obj.time())
df['Date'] = list_of_dates
df['Time'] = list_of_times
df['Date'] = pd.to_datetime(df['Date'])
start_date = '2018-04-13'
end_date = '2019-04-13'
mask1 = (df['Date'] >= start_date) & (df['Date'] <= end_date)
MuskTweets18_19 = df.loc[mask1]
return MuskTweets18_19.to_csv ('elonmusk_tweets.csv',index=False)
我收到了错误
date_time_obj = datetime.strptime(date, '%Y-%m-%d %H:%M:%S')
我怎么解决这个问题?先感谢您
您可以将数据类型强制转换为字符串来执行此计算吗?
date_time_obj = datetime.strptime(str(date), '%Y-%m-%d %H:%M:%S')
如果它说“strptime()参数1必须是str,而不是Timestamp”,可能你已经拥有了pandas.Timestamp
对象,即它不是一个字符串而是一个解析的日期时间,只有它是Pandas的格式,而不是Python的格式。所以转换,使用这个:
date_time_obj = date.to_pydatetime()
而不是date_time_obj = datetime.strptime(date, '%Y-%m-%d %H:%M:%S')