Make the email address for authors optional

CHANGELOG.md

@@ -16,6 +16,7 @@
 - Dependency resolution caches now use sha256 hashes.
 - Changed CLI error style.
 - Improved debugging of dependency resolution.
+- Made the email address for authors optional.
 
 ### Fixed
 

poetry/packages/package.py

@@ -18,7 +18,7 @@
 from .file_dependency import FileDependency
 from .vcs_dependency import VCSDependency
 
-AUTHOR_REGEX = re.compile('(?u)^(?P<name>[- .,\w\d\'’"()]+) <(?P<email>.+?)>$')
+AUTHOR_REGEX = re.compile('(?u)^(?P<name>[- .,\w\d\'’"()]+)(?: <(?P<email>.+?)>)?$')
 
 
 class Package(object):

tests/packages/test_package.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from poetry.packages import Package
+
+
+def test_package_authors():
+    package = Package('foo', '0.1.0')
+
+    package.authors.append('Sébastien Eustace <[email protected]>')
+    assert package.author_name == 'Sébastien Eustace'
+    assert package.author_email == '[email protected]'
+
+    package.authors.insert(0, 'John Doe')
+    assert package.author_name == 'John Doe'
+    assert package.author_email is None