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Django: for loop and if condition in one line

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0

I want to bring if dynamic_tickets: and for ticket in dynamic_tickets: in one line. I always receive a syntax error. Do you have an idea, how to achieve that?

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if ticket.dynamic_pricing_activated()
 ]
 if dynamic_tickets:
 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

python django

share|improve this question

asked Mar 25 at 7:03

Joey CoderJoey Coder

414113

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I always receive a syntax error. What error do you get? and on what line?
  
  – DirtyBit
  Mar 25 at 7:04
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I think OP is asking for the python equivalent of the JS array && array.forEach()
  
  – ManavM
  Mar 25 at 7:06
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  to solve this error you must add stack trace of raised exception
  
  – vorujack
  Mar 25 at 7:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What I see when I try for ticket in dynamic_tickets if dynamic_tickets: is that message in my console SyntaxError: invalid syntax
  
  – Joey Coder
  Mar 25 at 7:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  you can only use for ticket in dynamic_tickets if ticket but not for ticket in dynamic_tickets if dynamic_tickets. there's no need to write a list comprehension for the second one.
  
  – Woods Chen
  Mar 25 at 7:36
  

  
  
  
  

add a comment | 

0

I want to bring if dynamic_tickets: and for ticket in dynamic_tickets: in one line. I always receive a syntax error. Do you have an idea, how to achieve that?

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if ticket.dynamic_pricing_activated()
 ]
 if dynamic_tickets:
 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

python django

share|improve this question

asked Mar 25 at 7:03

Joey CoderJoey Coder

414113

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I always receive a syntax error. What error do you get? and on what line?
  
  – DirtyBit
  Mar 25 at 7:04
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I think OP is asking for the python equivalent of the JS array && array.forEach()
  
  – ManavM
  Mar 25 at 7:06
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  to solve this error you must add stack trace of raised exception
  
  – vorujack
  Mar 25 at 7:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What I see when I try for ticket in dynamic_tickets if dynamic_tickets: is that message in my console SyntaxError: invalid syntax
  
  – Joey Coder
  Mar 25 at 7:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  you can only use for ticket in dynamic_tickets if ticket but not for ticket in dynamic_tickets if dynamic_tickets. there's no need to write a list comprehension for the second one.
  
  – Woods Chen
  Mar 25 at 7:36
  

  
  
  
  

add a comment | 

I want to bring if dynamic_tickets: and for ticket in dynamic_tickets: in one line. I always receive a syntax error. Do you have an idea, how to achieve that?

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if ticket.dynamic_pricing_activated()
 ]
 if dynamic_tickets:
 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

python django

share|improve this question

asked Mar 25 at 7:03

Joey CoderJoey Coder

414113

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if ticket.dynamic_pricing_activated()
 ]
 if dynamic_tickets:
 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

share|improve this question

asked Mar 25 at 7:03

Joey CoderJoey Coder

414113

share|improve this question

asked Mar 25 at 7:03

Joey CoderJoey Coder

414113

asked Mar 25 at 7:03

Joey CoderJoey Coder

414113

asked Mar 25 at 7:03

Joey CoderJoey Coder

414113

1 Answer
1

active

oldest

votes

2

No need to use 'if dynamic_tickets:' , because when the list 'dynamic_tickets' will not be empty then only for loop will execute.
just write the code like this:

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if 
 ticket.dynamic_pricing_activated()
 ]

 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

share|improve this answer

edited Mar 25 at 9:40

sascha

87231025

answered Mar 25 at 9:18

Aman PrajapatiAman Prajapati

10215

add a comment | 

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2

No need to use 'if dynamic_tickets:' , because when the list 'dynamic_tickets' will not be empty then only for loop will execute.
just write the code like this:

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if 
 ticket.dynamic_pricing_activated()
 ]

 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

share|improve this answer

edited Mar 25 at 9:40

sascha

87231025

answered Mar 25 at 9:18

Aman PrajapatiAman Prajapati

10215

add a comment | 

2

No need to use 'if dynamic_tickets:' , because when the list 'dynamic_tickets' will not be empty then only for loop will execute.
just write the code like this:

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if 
 ticket.dynamic_pricing_activated()
 ]

 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

share|improve this answer

edited Mar 25 at 9:40

sascha

87231025

answered Mar 25 at 9:18

Aman PrajapatiAman Prajapati

10215

add a comment | 

No need to use 'if dynamic_tickets:' , because when the list 'dynamic_tickets' will not be empty then only for loop will execute.
just write the code like this:

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if 
 ticket.dynamic_pricing_activated()
 ]

 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

share|improve this answer

edited Mar 25 at 9:40

sascha

87231025

answered Mar 25 at 9:18

Aman PrajapatiAman Prajapati

10215

def adjust_prices():
 events = Event.objects.filter(status=EventStatus.LIVE)
 active_events = [event for event in events if not event.is_over]

 for active_event in active_events:
 dynamic_tickets = [
 ticket for ticket in active_event.tickets.all() if 
 ticket.dynamic_pricing_activated()
 ]

 for ticket in dynamic_tickets:
 print(ticket)
 print("DO OTHER STUFF")

share|improve this answer

edited Mar 25 at 9:40

sascha

87231025

answered Mar 25 at 9:18

Aman PrajapatiAman Prajapati

10215

edited Mar 25 at 9:40

sascha

87231025

edited Mar 25 at 9:40

sascha

87231025

answered Mar 25 at 9:18

Aman PrajapatiAman Prajapati

10215

answered Mar 25 at 9:18

Aman PrajapatiAman Prajapati

10215