template validation command displays additional blank line for description

[Kanagaraj Manickam]

when the multi line char '> is removed from the description part as below, it displays properly.
template
---------------------
heat_template_version: 2016-04-08

description: > <<--- multi line char
  First heat hot template used to demonstrate the hot template sections.

output
----------
manickan@mrkanag-os:~/workspace/hot-tutorials$ openstack orchestration template validate -t hello-world-2.yaml
ERROR: The Resource Type (OS::Heat::RandonString) could not be found.
manickan@mrkanag-os:~/workspace/hot-tutorials$ openstack orchestration template validate -t hello-world-2.yaml
Description: 'First heat hot template used to demonstrate the hot template sections.
        <<<< --- addition line is reported here --->>>
  '
Parameters: {}

But when the multi line char '> is removed from the description part as below, it displays properly.
template
---------------------
heat_template_version: 2016-04-08

description: <<--- no multi line char
  First heat hot template used to demonstrate the hot template sections.

output
----------
manickan@mrkanag-os:~/workspace/hot-tutorials$ openstack orchestration template validate -t hello-world-2.yaml
Description: First heat hot template used to demonstrate the hot template sections.
Parameters: {}
manickan@mrkanag-os:~/workspace/hot-tutorials$

[Di XiaoLi (dixiaoli)]

I can not reproduce the issue described above.

[Jason Dunsmore (jasondunsmore)]

It looks like a pyyaml bug.

With semicolon only:

> yaml.load('description: First heat hot template used to demonstrate the hot template sections.\n\n\n\nfoo: bar'
{'description': 'First heat hot template used to demonstrate the hot template sections.',
 'foo': 'bar'}

With multi line char ">":

> yaml.load('description: >\n First heat hot template used to demonstrate the hot template sections.\n\n\n\nfoo: bar')
{'description': 'First heat hot template used to demonstrate the hot template sections.\n',
 'foo': 'bar'}