我尝试从文件中拆分内容,该文件有很多行,但我们不知道有多少行 例如,我的文件中有这些数据:
7:1_8:35_2016-04-14
8:1_9:35_2016-04-15
9:1_10:35_2016-04-16
使用 paython 我想在每一行循环并像这样分割每一行:
for line in iter(file):
task =line.split("_")
first_time=task[0] #8:1
second_time=task[1] #9:35
date=task[2] #2016-04-15
但这会给我: 任务[0]是第一行 任务[1]是第二行,依此类推......我如何一次只读取一行并拆分其内容以执行某些操作,并与其他行执行相同的操作。
更新我的问题:完整代码:
with open('onlyOnce.txt', 'r') as fp:
for f_time, sec_time, dte in filter(None, reader(fp, delimiter="_")):
check_stime=f_time.split(":")
Stask_hour=check_stime[0]
Stask_minutes=check_stime[1]
check_etime=sec_time.split(":")
Etask_hour=check_etime[0]
Etask_minutes=check_etime[1]
#check every minute if current information = desired information
now = datetime.now()
now_time = now.time()
date_now = now.date()
if (time(Stask_hour,Stask_minutes) <= now_time <= time(Etask_hour,Etask_minutes) and date_now == dte):
print("this line in range time: "+ f_time)
else:
print("")
fp.close()
这段代码的目的是:检查每行的当前时间,当当前行在“第一行”范围内时//do somthing ,就像 make Schedule 或 Alarm 一样。
错误是:
Traceback (most recent call last):
File "<encoding error>", line 148, in <module>
TypeError: 'module' object is not callable
好的,最终更新是:
from datetime import datetime,time
from csv import reader
with open('onlyOnce.txt', 'r') as fp:
for f_time, sec_time, dte in filter(None, reader(fp, delimiter="_")):
check_stime=f_time.split(":")
Stask_hour=check_stime[0]
Stask_minutes=check_stime[1]
check_etime=sec_time.split(":")
Etask_hour=check_etime[0]
Etask_minutes=check_etime[1]
#check every minute if current information = desired information
now = datetime.now()
now_time = now.time()
date_now = now.date()
if time(int(Stask_hour),int(Stask_minutes)) <= now_time <= time(int(Etask_hour),int(Etask_minutes) and dte == date_now):
print("this line in range time: "+ f_time)
else:
print("")
fp.close()
但我想问一个愚蠢的问题:/ 当我检查这个逻辑时,不会打印"is"!但日期等于 2016-04-14 那么为什么不正确? O.o我很困惑
if('2016-04-14' == datetime.now().date() ):
print("yes")
感谢每一位帮助过我的人:Padric Cunningham 和其他人
最佳答案
使用 csv reader通过file object并使用 _
作为分隔符:
from csv import reader
with open("infile') as f:
# loop over reader getting a row at a time
for f_time, sec_time, dte in reader(f, delimiter="_"):
print(f_time, sec_time, dte )
这会给你一些输出,例如:
In [2]: from csv import reader
In [3]: from StringIO import StringIO
In [4]: for f,s,d in reader(StringIO(s), delimiter="_"):
...: print(f,s,d)
...:
('7:1', '8:35', '2016-04-14')
('8:1', '9:35', '2016-04-15')
('9:1', '10:35', '2016-04-16')
由于您有空行,我们需要将其过滤掉:
with open("infile') as f:
for f_time, sec_time, dte in filter(None, reader(f, delimiter="_")):
print(f_time, sec_time, dte )
现在空行将被删除:
In [5]: s = """7:1_8:35_2016-04-14
...: 8:1_9:35_2016-04-15
...:
...: 9:1_10:35_2016-04-16"""
In [6]: from csv import reader
In [7]: from StringIO import StringIO
In [8]: for f,s,d in filter(None, reader(StringIO(s), delimiter="_")):
...: print(f,s,d)
...:
('7:1', '8:35', '2016-04-14')
('8:1', '9:35', '2016-04-15')
('9:1', '10:35', '2016-04-16')
如果您想将当前日期和小时和分钟与当前时间进行比较:
from datetime import datetime
from csv import reader
with open('onlyOnce.txt', 'r') as fp:
for f_time, sec_time, dte in filter(None, reader(fp, delimiter="_")):
check_stime = f_time.split(":")
stask_hour= int(check_stime[0])
stask_minutes = int(check_stime[1])
check_etime = sec_time.split(":")
etask_hour = int(check_etime[0])
etask_minutes = int(check_etime[1])
# check every minute if current information = desired information
now = datetime.now()
hour_min_sec = now.hour, now.minute, now.second
if now.strftime("%Y-%d-%m") == dte and (stask_hour, stask_minutes, 0) <= hour_min_sec <= (etask_hour, etask_minutes, 0):
print("this line in range time: " + f_time)
else:
print("")
或者更简单的方法可能是只解析时间:
from datetime import datetime
from csv import reader
with open('onlyOnce.txt', 'r') as fp:
for f_time, sec_time, dte in filter(None, reader(fp, delimiter="_")):
check_stime = datetime.strptime(f_time,"%H:%m").time()
check_etime = datetime.strptime(f_time,"%H:%m").time()
# check every minute if current information = desired information
now = datetime.now()
if now.strftime("%Y-%d-%m") == dte and check_etime <= now.time() <= check_etime:
print("this line in range time: " + f_time)
else:
print("")
关于python - 如何使用 python 从文件中分割每一行?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36626130/