!5 use python3 replace python2 for build

From: @yeah_wang
Reviewed-by: @small_leek
Signed-off-by: @small_leek

python-ecdsa.spec

@@ -1,9 +1,8 @@
-%bcond_without python2
 %bcond_without python3
 
 Name:		python-ecdsa
 Version:	0.14.1
-Release:        2	
+Release:	3	
 Summary:	ECDSA cryptographic signature library
 License:	MIT
 URL:		https://pypi.python.org/pypi/ecdsa
@@ -20,21 +19,6 @@ the MIT license. With this library, you can quickly create keypairs (signing
 and signatures are very short, making them easy to handle and incorporate 
 into other protocols.
 
-%if %{with python2}
-%package -n python2-ecdsa
-Summary:        ECDSA cryptographic signature library
-BuildRequires:  python2-devel python2-setuptools python2-six
-Requires:       python2-six
-%{?python_provide:%python_provide python2-ecdsa}
-
-%description -n python2-ecdsa
-This is an easy-to-use implementation of ECDSA cryptography (Elliptic Curve
-Digital Signature Algorithm), implemented purely in Python, released under
-the MIT license. With this library, you can quickly create keypairs (signing  key and verifying key), sign messages, and verify the signatures. The keys
-and signatures are very short, making them easy to handle and incorporate
-into other protocols.
-%endif
-
 %package -n python3-ecdsa
 Summary:        ECDSA cryptographic signature library
 BuildRequires:  python3-devel
@@ -57,30 +41,14 @@ rm -rf ecdsa.egg-info
 find src/ecdsa -name \*.py | xargs sed -ie '/\/usr\/bin\/env/d'
 
 %build
-%if %{with python2}
-%_bindir/python2 setup.py build '--executable=%_bindir/python2 -s'
-%endif 
 %_bindir/python3 setup.py build '--executable=%_bindir/python3 -s'
 
 %install
-%if %{with python2}
-%_bindir/python2 setup.py install -O1 --skip-build --root %buildroot
-%endif
 %_bindir/python3 setup.py install -O1 --skip-build --root %buildroot
 
 %check
-%if %{with python2}
-%_bindir/python2 setup.py test
-%endif
 %_bindir/python3 setup.py test
 
-%if %{with python2}
-%files -n python2-ecdsa
-%defattr(-,root,root)
-%license LICENSE
-%_prefix/lib/python2.7/site-packages/*
-%endif
-
 %files -n python3-ecdsa
 %defattr(-,root,root)
 %license LICENSE
@@ -91,6 +59,9 @@ find src/ecdsa -name \*.py | xargs sed -ie '/\/usr\/bin\/env/d'
 %doc NEWS README.md
 
 %changelog
+* Thu Oct 29 2020 wangye <wangye70@huawei.com> - 0.14.1-3
+- use python3 replace python2 for build
+
 * Tue Jun 16 2020 hanhui <hanhui@huawei.com> - 0.14.1-2
 - fix python3.8 can not find path