How to make datetime.now function update when put within a loop

-1

I have created a for Loop that repeats the piece of code 100 times, the problem is that the datetime import won't update within the loop.

Code below:

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

all it outputs is the same hours, minutes and seconds as when I first pressed run.

Output below:



11:59:0711:59:07



11:59:0711:59:07

(This carries on for 100 times)

edited Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

asked Nov 12 '18 at 12:07

Jordan Maertens

add a comment |

-1

I have created a for Loop that repeats the piece of code 100 times, the problem is that the datetime import won't update within the loop.

Code below:

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

all it outputs is the same hours, minutes and seconds as when I first pressed run.

Output below:



11:59:0711:59:07



11:59:0711:59:07

(This carries on for 100 times)

edited Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

asked Nov 12 '18 at 12:07

Jordan Maertens

add a comment |

-1

I have created a for Loop that repeats the piece of code 100 times, the problem is that the datetime import won't update within the loop.

Code below:

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

all it outputs is the same hours, minutes and seconds as when I first pressed run.

Output below:



11:59:0711:59:07



11:59:0711:59:07

(This carries on for 100 times)

edited Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

asked Nov 12 '18 at 12:07

Jordan Maertens

I have created a for Loop that repeats the piece of code 100 times, the problem is that the datetime import won't update within the loop.

Code below:

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

all it outputs is the same hours, minutes and seconds as when I first pressed run.

Output below:



11:59:0711:59:07



11:59:0711:59:07

(This carries on for 100 times)

python python-3.x

edited Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

asked Nov 12 '18 at 12:07

Jordan Maertens

edited Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

asked Nov 12 '18 at 12:07

Jordan Maertens

edited Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

edited Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

edited Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

asked Nov 12 '18 at 12:07

Jordan Maertens

asked Nov 12 '18 at 12:07

Jordan Maertens

asked Nov 12 '18 at 12:07

Jordan Maertens

add a comment |

3 Answers
3

active

oldest

votes

You have to call now again:

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

now is an object, it doesn't get the new time when you use it (it would be terrible).

edited Nov 12 '18 at 12:09

answered Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

Great help thank you!
– Jordan Maertens
Nov 12 '18 at 12:09

@DanielRoseman ??? Why did you remove the () ??
– Matthieu Brucher
Nov 12 '18 at 12:11

you need to make it now = datetime.now() otherwise you'll get an attribute error when you use now.hour
– vencaslac
Nov 12 '18 at 12:13

Yes, I know, someone made an edit to remove the call!
– Matthieu Brucher
Nov 12 '18 at 12:14

No, I made an edit to add them. You left them off originally, then subsequently overwrote my edit with a previous version which still didn't have them.
– Daniel Roseman
Nov 12 '18 at 12:22

add a comment |

you are only sampling now one time, you need to do it inside the for loop like so

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

vencaslac

1,002217

add a comment |

Why don't you move the now = datetime.now() within the loop?

for i in range(0,100):

    time.sleep(1)

    now = datetime.now()

    print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

Siddharth Audhinarayanan

add a comment |

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3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

You have to call now again:

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

now is an object, it doesn't get the new time when you use it (it would be terrible).

edited Nov 12 '18 at 12:09

answered Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

Great help thank you!
– Jordan Maertens
Nov 12 '18 at 12:09

@DanielRoseman ??? Why did you remove the () ??
– Matthieu Brucher
Nov 12 '18 at 12:11

you need to make it now = datetime.now() otherwise you'll get an attribute error when you use now.hour
– vencaslac
Nov 12 '18 at 12:13

Yes, I know, someone made an edit to remove the call!
– Matthieu Brucher
Nov 12 '18 at 12:14

No, I made an edit to add them. You left them off originally, then subsequently overwrote my edit with a previous version which still didn't have them.
– Daniel Roseman
Nov 12 '18 at 12:22

add a comment |

You have to call now again:

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

now is an object, it doesn't get the new time when you use it (it would be terrible).

edited Nov 12 '18 at 12:09

answered Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

Great help thank you!
– Jordan Maertens
Nov 12 '18 at 12:09

@DanielRoseman ??? Why did you remove the () ??
– Matthieu Brucher
Nov 12 '18 at 12:11

you need to make it now = datetime.now() otherwise you'll get an attribute error when you use now.hour
– vencaslac
Nov 12 '18 at 12:13

Yes, I know, someone made an edit to remove the call!
– Matthieu Brucher
Nov 12 '18 at 12:14

No, I made an edit to add them. You left them off originally, then subsequently overwrote my edit with a previous version which still didn't have them.
– Daniel Roseman
Nov 12 '18 at 12:22

add a comment |

You have to call now again:

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

now is an object, it doesn't get the new time when you use it (it would be terrible).

edited Nov 12 '18 at 12:09

answered Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

You have to call now again:

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

now is an object, it doesn't get the new time when you use it (it would be terrible).

edited Nov 12 '18 at 12:09

answered Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

edited Nov 12 '18 at 12:09

answered Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

answered Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

answered Nov 12 '18 at 12:08

Matthieu Brucher

12.1k22139

Great help thank you!
– Jordan Maertens
Nov 12 '18 at 12:09

@DanielRoseman ??? Why did you remove the () ??
– Matthieu Brucher
Nov 12 '18 at 12:11

you need to make it now = datetime.now() otherwise you'll get an attribute error when you use now.hour
– vencaslac
Nov 12 '18 at 12:13

Yes, I know, someone made an edit to remove the call!
– Matthieu Brucher
Nov 12 '18 at 12:14

No, I made an edit to add them. You left them off originally, then subsequently overwrote my edit with a previous version which still didn't have them.
– Daniel Roseman
Nov 12 '18 at 12:22

add a comment |

Great help thank you!
– Jordan Maertens
Nov 12 '18 at 12:09

@DanielRoseman ??? Why did you remove the () ??
– Matthieu Brucher
Nov 12 '18 at 12:11

you need to make it now = datetime.now() otherwise you'll get an attribute error when you use now.hour
– vencaslac
Nov 12 '18 at 12:13

Yes, I know, someone made an edit to remove the call!
– Matthieu Brucher
Nov 12 '18 at 12:14

No, I made an edit to add them. You left them off originally, then subsequently overwrote my edit with a previous version which still didn't have them.
– Daniel Roseman
Nov 12 '18 at 12:22

Great help thank you!
– Jordan Maertens
Nov 12 '18 at 12:09

@DanielRoseman ??? Why did you remove the () ??
– Matthieu Brucher
Nov 12 '18 at 12:11

you need to make it now = datetime.now() otherwise you'll get an attribute error when you use now.hour
– vencaslac
Nov 12 '18 at 12:13

Yes, I know, someone made an edit to remove the call!
– Matthieu Brucher
Nov 12 '18 at 12:14

No, I made an edit to add them. You left them off originally, then subsequently overwrote my edit with a previous version which still didn't have them.
– Daniel Roseman
Nov 12 '18 at 12:22

add a comment |

you are only sampling now one time, you need to do it inside the for loop like so

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

vencaslac

1,002217

add a comment |

you are only sampling now one time, you need to do it inside the for loop like so

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

vencaslac

1,002217

add a comment |

you are only sampling now one time, you need to do it inside the for loop like so

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

vencaslac

1,002217

you are only sampling now one time, you need to do it inside the for loop like so

from datetime import datetime

now = datetime.now()



print("%02d-%02d-%04d") % (now.year, now.month, now.day)

#below is the loop

for i in range(0, 100):

  time.sleep(1)

  now = datetime.now()

  print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

vencaslac

1,002217

answered Nov 12 '18 at 12:09

vencaslac

1,002217

answered Nov 12 '18 at 12:09

vencaslac

1,002217

answered Nov 12 '18 at 12:09

vencaslac

1,002217

add a comment |

Why don't you move the now = datetime.now() within the loop?

for i in range(0,100):

    time.sleep(1)

    now = datetime.now()

    print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

Siddharth Audhinarayanan

add a comment |

Why don't you move the now = datetime.now() within the loop?

for i in range(0,100):

    time.sleep(1)

    now = datetime.now()

    print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

Siddharth Audhinarayanan

add a comment |

Why don't you move the now = datetime.now() within the loop?

for i in range(0,100):

    time.sleep(1)

    now = datetime.now()

    print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

Siddharth Audhinarayanan

Why don't you move the now = datetime.now() within the loop?

for i in range(0,100):

    time.sleep(1)

    now = datetime.now()

    print ("%02d:%02d:%02d") % (now.hour, now.minute, now.second)

answered Nov 12 '18 at 12:09

Siddharth Audhinarayanan

answered Nov 12 '18 at 12:09

Siddharth Audhinarayanan

answered Nov 12 '18 at 12:09

Siddharth Audhinarayanan

answered Nov 12 '18 at 12:09

Siddharth Audhinarayanan

add a comment |

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