python时间格式转换_pyspark怎么把str变成struct

# str转struct_time
import time
cur_time = "2022-03-12 00:00:00"
time_format = "%Y-%m-%d %H:%M:%S"
cur_time = time.strptime(cur_time, time_format)
print(cur_time)
# time.struct_time(tm_year=2022, tm_mon=3, tm_mday=12, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=5, tm_yday=71, tm_isdst=-1)
# <class 'time.struct_time'>

# struct_time转str
cur_time = time.strftime(time_format, cur_time)
print(type(cur_time))
# <class 'str'>

# str转datetime
from datetime import datetime
cur_time = datetime.strptime(cur_time, time_format)
print(type(cur_time))
# <class 'datetime.datetime'>

# datetime转str
cur_time = cur_time.strftime(time_format)
print(type(cur_time))
# <class 'str'>

# struct_time转datetime
import datetime
# str转struct_time
cur_time = time.strptime(cur_time, time_format)
cur_time = datetime.datetime(*cur_time[:6])
print(type(cur_time))
# <class 'datetime.datetime'>

# struct_time转datetime
from time import mktime
cur_time = cur_time.strftime(time_format)
print(type(cur_time))
cur_time = time.strptime(cur_time, time_format)
print(type(cur_time))
cur_time = datetime.fromtimestamp(mktime(cur_time))
print(type(cur_time))
# <class 'datetime.datetime'>

"""
struct_time可以比较时间大小
datetime可以加减时间
datetime.timedelta(days=1)
"""
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