why does rpm ask for an earlier release?

[travel NJ]

I have built an RPM with the following definition, then it created an rpm
called Python-2.7-2.x86_64.rpm.
It failed when I tried to install it, with the following


error: Failed dependencies:

        /home/sysadm/rpmbuild/Python2.7/Python2.7-root/usr/local/bin/python2.7
is needed by Python-2.7-2.x86_64
I looked into http://tldp.org/HOWTO/RPM-HOWTO/build.html, seems that release
is for the release number of the same version, hence I am not sure why it
causes the problem

*portion of the spec file*

%define _topdir /home/users/sysadm/buildrpm/Python2.7
%define name    Python
%define release 2
%define version 2.7
%define buildroot       %{_topdir}/%{name}%{version}-root
BuildRoot:      %{buildroot}
Summary:        GNU python
License:        GPL
Name:           %{name}
Version:        %{version}
Release:        %{release}
Source:         %{name}-%{version}.tar.gz
Prefix:         /usr
Group:          Development/Tools
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