Datetime, c # datetime

Datetime, c # datetime

# Import datetime

# String to datetime:

# Notice:

# When the String type is converted to the datetime type, the date format must match

　　a = '2016-03-23'　　b = datetime.datetime.strptime(a,'%Y-%m-%d')

# Datetime to String:

# Notice:

# When datetime is converted to the String type, it can be converted to any format

　　now = datetime.datetime.now()

# Obtain the current time:

　　now = datetime.datetime.now()

# Get today's date:

    today = datetime.date.today()

# Obtain the date of yesterday:

    yesterday = today - datetime.timedelta(days=1)

# Obtain n days, n hours, before and after a date:

# Example: Get the date of the previous 8 days

　　now = datetime.datetime.now()　　date_before_8 = now - datetime.timedelta(days=8)

# Example: Get the date 12 days after the present:

　　date_after_12 = now + datetime.timedelta(days=12)

# Example: 8 hours before the current time:

　　date_before_8_hours = now - datetime.timedelta(hours=8)

# Obtain the date and time objects of datetime respectively:

　　now = datetime.datetime.now().　　now.date()　　now.time()

# Obtain the year, month, and day of datetime respectively:

　　now.year　　now.month　　now.day

# Obtain the time difference between two datetime values, and return the number of days:

　　(date1 - date2).days