importpandasaspd now=pd.Timestamp.now()print("Current year: ",now.year)print("Current quarter: ",now.quarter)print("Current month: ",now.month)print("Current week num: ",now.week)print("Current week num: ",now.weekofyear)print("Current day: ",now.day)print("Current day_of_year: ...
# 寻找星期几跟股票张得的关系 # 1、先把对应的日期找到星期几 date = pd.to_datetime(data.index).weekday data['week'] = date # 增加一列 # 2、假如把p_change按照大小去分个类0为界限 data['posi_neg'] = np.where(data['p_change'] > 0, 1, 0) # 通过交叉表找寻两列数据的关系 count ...
dtype: datetime64[ns] In [566]: store.select_column("df_dc", "string") Out[566]: 0 foo 1 foo 2 foo 3 foo 4 NaN 5 NaN 6 foo 7 bar Name: string, dtype: object
importpandasaspdimportrequestsfromdatetimeimportdatetime,timedeltadeffetch_realtime_data(api_url):response=requests.get(api_url)data=response.json()df=pd.DataFrame(data)returndf# 每隔5秒获取一次数据whileTrue:current_time=datetime.now()df=fetch_realtime_data('https:///data')print(f"Data fetched at...
('数据源data/nsw-covid-cases-by-postcode.csv') from datetime import datetime bar_chart = cases_df.sum(axis=1).plot_animated( kind='line', label_events={ 'Ruby Princess Disembark':datetime.strptime("19/03/2020", "%d/%m/%Y"), 'Lockdown':datetime.strptime("31/03/2020", "%d/%m/%Y...
16. Manipulate Datetime with Timezone Information Write a Pandas program to manipulate and convert date times with timezone information. Click me to see the sample solution 17. Average Mean of UFO Sighting Reports Write a Pandas program to get the average mean of the UFO (unidentified flying ob...
21、pd.Series中日期字符串转换为datetime格式 22、获取pd.Series日期字符串中时间对象 23、pd.Series日期字符串中修改为按指定日期输出 24、输出pd.Series中至少包含两个元音字符的数据 25、输出pd.Series中有效的email地址 26、pd.Series1按pd.Series2分组并求均值 27、计算两个pd.Series之间的欧式距离...
import datetimefrom email.mime.text import MIMETextfrom email.mime.multipart import MIMEMultipartimport smtplib#返回SQL结果的函数def retsql(sql): db_user = MySQLdb.connect('IP','用户名','密码','j数据库名(可以不指定)',cursorclass=MySQLdb.cursors.DictCursor(设置返回结果以字典的格式)) cursor = ...
result=list(df1.T.to_dict().values())importnumpy as npclassMyNpEncoder(json.JSONEncoder):defdefault(self, obj):ifisinstance(obj, np.integer):returnint(obj)elifisinstance(obj, np.floating):returnfloat(obj)elifisinstance(obj, np.ndarray):returnobj.tolist()elifisinstance(obj, pd.datetime):re...
converted dates to apply the datetimeconversion. May produce significant speed-up when parsing duplicatedate strings, especially ones with timezone offsets... versionadded:: 0.25.0iterator : bool, default FalseReturn TextFileReader object for iteration or getting chunks with``get_chunk()``... ve...