[Buildroot] [PATCH] scanpypi: rework download_package error handling

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "yegorslists" == yegorslists  <yegorslists@googlemail.com> writes:

 > From: Yegor Yefremov <yegorslists@googlemail.com>
 > Some packages don't provide source archive but only a wheel file. In
 > this case download variable is not defined. So define this variable at
 > the very beginning and check whether it is None after searching for
 > source archives in the metadata.

 > Bonus: fix PEP8 issue with wrong indentation.

 > Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>

Committed, thanks.

Out of interest, are you using python 2.x or 3.x? I just tried scanpypi
for the validators module on my Debian (so python 2.7) laptop:

./utils/scanpypi validators
spdx_lookup module is not installed. This can lead to an inaccurate licence detection. Please install it via
pip install spdx_lookup
buildroot package name for validators: python-validators
Package: python-validators
Fetching package validators
Downloading package validators from https://files.pythonhosted.org/packages/45/7b/5b7b74208a3e0744d1a0efbfb1935fa46fa4cfe58d3d63f17c49c58c429c/validators-0.12.2.tar.gz...
Added packages 'six, decorator' as dependencies of python-validators
Checking if package ./package/python-validators already exists...
Error: Package ./package/python-validators already exists
Do you want to delete existing package ? [y/N]y
Creating ./package/python-validators/python-validators.mk...
Creating ./package/python-validators/python-validators.hash...
Creating ./package/python-validators/Config.in...
Traceback (most recent call last):
  File "./utils/scanpypi", line 720, in <module>
    main()
  File "./utils/scanpypi", line 712, in main
    package.create_config_in()
  File "./utils/scanpypi", line 606, in create_config_in
    config_file.writelines(lines)
TypeError: writelines() argument must be a sequence of strings

Printing out 'lines', it seems to be a mix of normal strings and unicode:

lines: ['config BR2_PACKAGE_PYTHON_VALIDATORS\n', '\tbool "python-validators"\n', '\tselect BR2_PACKAGE_PYTHON_SIX # runtime\n', '\tselect BR2_PACKAGE_PYTHON_DECORATOR # runtime\n', '\thelp\n', u'\t  Python Data Validation for Humans\u2122.\n', '\n', u'\t  https://github.com/kvesteri/validators\n']

-- 
Bye, Peter Korsgaard