#32978: Provide more informative error message on loaddata/dumpdata --format 
yaml
when PyYAML not installed
-------------------------------------+-------------------------------------
     Reporter:  Brad                 |                    Owner:  nobody
         Type:                       |                   Status:  new
  Cleanup/optimization               |
    Component:  Core                 |                  Version:  3.2
  (Serialization)                    |
     Severity:  Normal               |               Resolution:
     Keywords:                       |             Triage Stage:  Accepted
  serializers,yaml,dumpdata,loaddata |
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  1                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Changes (by Mariusz Felisiak):

 * component:  Core (Management commands) => Core (Serialization)
 * easy:  0 => 1
 * stage:  Unreviewed => Accepted


Comment:

 Agreed, we can raise an `ImproperlyConfigured` error, e.g.
 {{{
 try:
     import yaml
 except ImportError as e:
     raise ImproperlyConfigured(
         'Error loading yaml module. Did you install PyYAML?'
     ) from e
 }}}

-- 
Ticket URL: <https://code.djangoproject.com/ticket/32978#comment:3>
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