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Creating a dynamic choice field

...passing the user to the form init class waypointForm(forms.Form): def __init__(self, user, *args, **kwargs): super(waypointForm, self).__init__(*args, **kwargs) self.fields['waypoints'] = forms.ChoiceField( choices=[(o.id, str(o)) for o in Waypoint.objects.filter(use...
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How do you write tests for the argparse portion of a python module? [closed]

... Thanks for your answer. How do we test for errors when a certain argument is not passed? – Pratik Khadloya Feb 5 '15 at 2:49 3 ...
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Bash: Strip trailing linebreak from output

...-l log.txt` – Satya Sep 30 '13 at 4:05 9 ...
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What is %2C in a URL?

...# | 43 | C | 63 | c | | 04 | EOT | 24 | $ | 44 | D | 64 | d | | 05 | ENQ | 25 | % | 45 | E | 65 | e | | 06 | ACK | 26 | & | 46 | F | 66 | f | | 07 | BEL | 27 | ' | 47 | G | 67 | g | | 08 | BS | 28 | ( | 48 | H | 68 | h | | 09 | TAB | 29 | ) | 49 | I | 69 |...
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JSON to pandas DataFrame

... Error. You should pass the file contents (i.e. a string) to json.loads(), not the file object itself - json.load(train_file.read()) – Vasin Yuriy Nov 1 '19 at 12:12 ...
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How to wait for a number of threads to complete?

...o capture any exceptions that occurred and store them locally (or store an error message/condition). In the example, f.get() returns your object that you submitted to the ExecutorService. Your object could have a method for retrieving any exceptions/error conditions. Depending on how you modify the ...
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Python 3 turn range to a list

... Why does it give an error in jupyter notebook and working fine in shell? Error: 'range' object is not callable – subtleseeker Sep 29 '18 at 15:01 ...
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How to unmount a busy device

...R corrupt open files. Programs accessing target DEVICE/NFS files may throw errors OR could not work properly after force unmount. Do execute these commands when not inside mounted Folder/Drive/Device. share | ...
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How do I add the contents of an iterable to a set?

...rt Timer a = set(range(1, 100000)) b = list(range(50000, 150000)) def one_by_one(s, l): for i in l: s.add(i) def cast_to_list_and_back(s, l): s = set(list(s) + l) def update_set(s,l): s.update(l) results are: one_by_one 10.184448844986036 cast_to_list_and_back 7.96925...
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How can I ssh directly to a particular directory?

...couldn't allocate a pseudo-tty I suppose) and kept me giving the following error: Pseudo-terminal will not be allocated because stdin is not a terminal I could get around this issue passing "cd to dir + my command" as a parameter of the ssh command (to not have to allocate a Pseudo-terminal) and ...