1 def getDateTime(time_str):
2 '''
3 转换时间
4 :param time_str:
5 :return:
6 '''
7 if not isinstance(time_str,unicode):
8 time_str = time_str.decode('utf-8')
9
10 time_now = datetime.datetime.now()
11 time_return = time_str
12
13 if u'秒' in time_str:
14 reg = r'(\d+)'
15 t_second = re.search(reg, time_str)
16 if t_second is not None:
17 t_second = t_second.group(1)
18 t_second = string.atoi(t_second)
19 t_second = datetime.timedelta(seconds=t_second)
20 time_return = time_now - t_second
21 time_return = datetime.datetime.strftime(time_return, '%Y-%m-%d %H:%M:%S')
22 return time_return
23 elif u'分钟' in time_str:
24 reg = r'(\d+)'
25 t_minute = re.search(reg, time_str)
26 if t_minute is not None:
27 t_minute = t_minute.group(1)
28 t_minute = string.atoi(t_minute)
29 t_minute = datetime.timedelta(minutes=t_minute)
30 time_return = time_now - t_minute
31 time_return = datetime.datetime.strftime(time_return, '%Y-%m-%d %H:%M:%S')
32 return time_return
33 elif u'小时' in time_str:
34 reg = r'(\d+)'
35 t_hour = re.search(reg, time_str)
36 if t_hour is not None:
37 t_hour = t_hour.group(1)
38 t_hour = string.atoi(t_hour)
39 t_hour = datetime.timedelta(hours=t_hour)
40 time_return = time_now - t_hour
41 time_return = datetime.datetime.strftime(time_return, '%Y-%m-%d %H:%M:%S')
42 return time_return
43 elif u'今天' in time_str:
44 time_return = time_now.strftime('%Y-%m-%d %H:%M:%S')
45 return time_return
46 elif u'天前' in time_str:
47 reg = r'(\d+)'
48 t_day = re.search(reg, time_str)
49 if t_day is not None:
50 t_day = t_day.group(1)
51 t_day = string.atoi(t_day)
52 t_day = datetime.timedelta(days=t_day)
53 time_return = time_now - t_day
54 time_return = datetime.datetime.strftime(time_return, '%Y-%m-%d %H:%M:%S')
55 return time_return
56 elif u'周' in time_str:
57 reg = u'(\d+)'
58 t_week = re.search(reg, time_str)
59 if t_week is not None:
60 t_week = t_week.group(1)
61 t_week = string.atoi(t_week)
62 t_week = datetime.timedelta(weeks=t_week)
63 time_return = time_now - t_week
64 time_return = datetime.datetime.strftime(time_return, '%Y-%m-%d %H:%M:%S')
65 return time_return
66 elif u'月' in time_str:
67 reg = r'(\d+)'
68 t_num = re.search(reg, time_str)
69 if t_num is not None:
70 t_num = int(t_num.group(1))
71 date_to = time_now.month - t_num
72 # 判断是否跨年
73 if date_to == 0:
74 month_to = 12
75 year_to = -1
76 else:
77 month_to = date_to % 12
78 year_to = (date_to) / 12
79 # 如果是最后一天31日，注意其他月份没有31日
80 now_year = time_now.year+year_to
81 d = calendar.monthrange(now_year,month_to)
82 now_day = time_now.day
83 if now_day > d[1]:
84 now_day = d[1]
85 date_from = datetime.datetime(now_year,month_to,now_day,time_now.hour,time_now.minute,time_now.second)
86 time_return = datetime.datetime.strftime(date_from, '%Y-%m-%d %H:%M:%S')
87 return time_return
88 elif u'年' in time_str:
89 reg = u'(\d+)'
90 t_year = re.search(reg, time_str)
91 if t_year is not None:
92 t_year = int(t_year.group(1))
93 date_from = datetime.datetime(time_now.year-t_year,time_now.month,time_now.day,time_now.hour,time_now.minute,time_now.second)
94 time_return = datetime.datetime.strftime(date_from, '%Y-%m-%d %H:%M:%S')
95 return time_return
96 else:
97 # time_return = time_str
98 int_year = time_now.year
99 str_year = str(int_year)
100 if time_str.find(str_year) < 0:
101 time_return = str_year + '-' + time_str
102 t_count = time_str.count(':')
103 if t_count == 1:
104 time_return += ':00'
105 elif t_count == 0:
106 time_return += ' 00:00:00'
107
108 # 如果日期大于当前日期，则年份减1
109 r_date = datetime.datetime.strptime(time_return, '%Y-%m-%d %H:%M:%S')
110 if r_date > time_now:
111 int_year_1 = int_year - 1
112 time_return = time_return.replace(str_year, str(int_year_1))
113
114 return time_return
115
116 if __name__ == '__main__':
117 print getDateTime('1周前')
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