automatic import of python-lazy-property

3 files changed, 176 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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+/lazy-property-0.0.1.tar.gz
diff --git a/python-lazy-property.spec b/python-lazy-property.spec
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+%global _empty_manifest_terminate_build 0
+Name:		python-lazy-property
+Version:	0.0.1
+Release:	1
+Summary:	Makes properties lazy (ie evaluated only when called)
+License:	MIT
+URL:		https://github.com/jackmaney/lazy-property.git
+Source0:	https://mirrors.nju.edu.cn/pypi/web/packages/1c/97/55bf318faf296b254a20e80657b439b019fd809d4aabc1e55d7788f75401/lazy-property-0.0.1.tar.gz
+BuildArch:	noarch
+
+
+%description
+`Properties <https://docs.python.org/3.4/library/functions.html#property>`_ are a very useful feature of Python, effectively allowing an attribute to masquerade as a method (with no arguments other than ``self``). However, sometimes we want to store the results of an expensive computation in an attribute. The straightforward way to do it would be something like the following:
+    import time
+    def do_some_big_calculation():
+        """Simulating some ginormous calculation going on somewhere..."""
+        print("{}: Calculations started...".format(time.time))
+        time.sleep(5)
+        print("{}: Calculations complete!".format(time.time))
+        return 42
+    class SomeClass(object):
+        def __init__(self):
+            self.calculation_value = do_some_big_calculation()
+And that certainly works. However, this means that whenever you instantiate an object from ``SomeClass``, you'll perform this calculation each time. That could be problematic...
+So, what we really want is for this calculation to only be done when it's needed. In other words, what we want is for this attribute to be **lazy**.
+To do that, you can create a property, and a "private" attribute, named ``_calculation_value``, used to cache the result, like so:
+    class SomeOtherClass(object):
+    @property
+    def calculation_value(self):
+        if not hasattr(self, "_calculation_value"):
+            self._calculation_value = do_some_big_calculation()
+        return self._calculation_value
+This package essentially reduces this down to a decorator:
+    import lazy_property
+    class YetAnotherClass(object):
+        @lazy_property.LazyProperty
+        def calculation_value(self):
+            return do_some_big_calculation()
+And when called, the "calculation" is only done once:
+    In [5]:yac = YetAnotherClass()
+    In [6]: yac.calculation_value
+    1440798443.228256: Calculations started...
+    1440798448.229179: Calculations complete!
+    Out[6]: 42
+    In [7]: yac.calculation_value
+    Out[7]: 42
+Note, however, that this property is not writable:
+
+%package -n python3-lazy-property
+Summary:	Makes properties lazy (ie evaluated only when called)
+Provides:	python-lazy-property
+BuildRequires:	python3-devel
+BuildRequires:	python3-setuptools
+BuildRequires:	python3-pip
+%description -n python3-lazy-property
+`Properties <https://docs.python.org/3.4/library/functions.html#property>`_ are a very useful feature of Python, effectively allowing an attribute to masquerade as a method (with no arguments other than ``self``). However, sometimes we want to store the results of an expensive computation in an attribute. The straightforward way to do it would be something like the following:
+    import time
+    def do_some_big_calculation():
+        """Simulating some ginormous calculation going on somewhere..."""
+        print("{}: Calculations started...".format(time.time))
+        time.sleep(5)
+        print("{}: Calculations complete!".format(time.time))
+        return 42
+    class SomeClass(object):
+        def __init__(self):
+            self.calculation_value = do_some_big_calculation()
+And that certainly works. However, this means that whenever you instantiate an object from ``SomeClass``, you'll perform this calculation each time. That could be problematic...
+So, what we really want is for this calculation to only be done when it's needed. In other words, what we want is for this attribute to be **lazy**.
+To do that, you can create a property, and a "private" attribute, named ``_calculation_value``, used to cache the result, like so:
+    class SomeOtherClass(object):
+    @property
+    def calculation_value(self):
+        if not hasattr(self, "_calculation_value"):
+            self._calculation_value = do_some_big_calculation()
+        return self._calculation_value
+This package essentially reduces this down to a decorator:
+    import lazy_property
+    class YetAnotherClass(object):
+        @lazy_property.LazyProperty
+        def calculation_value(self):
+            return do_some_big_calculation()
+And when called, the "calculation" is only done once:
+    In [5]:yac = YetAnotherClass()
+    In [6]: yac.calculation_value
+    1440798443.228256: Calculations started...
+    1440798448.229179: Calculations complete!
+    Out[6]: 42
+    In [7]: yac.calculation_value
+    Out[7]: 42
+Note, however, that this property is not writable:
+
+%package help
+Summary:	Development documents and examples for lazy-property
+Provides:	python3-lazy-property-doc
+%description help
+`Properties <https://docs.python.org/3.4/library/functions.html#property>`_ are a very useful feature of Python, effectively allowing an attribute to masquerade as a method (with no arguments other than ``self``). However, sometimes we want to store the results of an expensive computation in an attribute. The straightforward way to do it would be something like the following:
+    import time
+    def do_some_big_calculation():
+        """Simulating some ginormous calculation going on somewhere..."""
+        print("{}: Calculations started...".format(time.time))
+        time.sleep(5)
+        print("{}: Calculations complete!".format(time.time))
+        return 42
+    class SomeClass(object):
+        def __init__(self):
+            self.calculation_value = do_some_big_calculation()
+And that certainly works. However, this means that whenever you instantiate an object from ``SomeClass``, you'll perform this calculation each time. That could be problematic...
+So, what we really want is for this calculation to only be done when it's needed. In other words, what we want is for this attribute to be **lazy**.
+To do that, you can create a property, and a "private" attribute, named ``_calculation_value``, used to cache the result, like so:
+    class SomeOtherClass(object):
+    @property
+    def calculation_value(self):
+        if not hasattr(self, "_calculation_value"):
+            self._calculation_value = do_some_big_calculation()
+        return self._calculation_value
+This package essentially reduces this down to a decorator:
+    import lazy_property
+    class YetAnotherClass(object):
+        @lazy_property.LazyProperty
+        def calculation_value(self):
+            return do_some_big_calculation()
+And when called, the "calculation" is only done once:
+    In [5]:yac = YetAnotherClass()
+    In [6]: yac.calculation_value
+    1440798443.228256: Calculations started...
+    1440798448.229179: Calculations complete!
+    Out[6]: 42
+    In [7]: yac.calculation_value
+    Out[7]: 42
+Note, however, that this property is not writable:
+
+%prep
+%autosetup -n lazy-property-0.0.1
+
+%build
+%py3_build
+
+%install
+%py3_install
+install -d -m755 %{buildroot}/%{_pkgdocdir}
+if [ -d doc ]; then cp -arf doc %{buildroot}/%{_pkgdocdir}; fi
+if [ -d docs ]; then cp -arf docs %{buildroot}/%{_pkgdocdir}; fi
+if [ -d example ]; then cp -arf example %{buildroot}/%{_pkgdocdir}; fi
+if [ -d examples ]; then cp -arf examples %{buildroot}/%{_pkgdocdir}; fi
+pushd %{buildroot}
+if [ -d usr/lib ]; then
+	find usr/lib -type f -printf "/%h/%f\n" >> filelist.lst
+fi
+if [ -d usr/lib64 ]; then
+	find usr/lib64 -type f -printf "/%h/%f\n" >> filelist.lst
+fi
+if [ -d usr/bin ]; then
+	find usr/bin -type f -printf "/%h/%f\n" >> filelist.lst
+fi
+if [ -d usr/sbin ]; then
+	find usr/sbin -type f -printf "/%h/%f\n" >> filelist.lst
+fi
+touch doclist.lst
+if [ -d usr/share/man ]; then
+	find usr/share/man -type f -printf "/%h/%f.gz\n" >> doclist.lst
+fi
+popd
+mv %{buildroot}/filelist.lst .
+mv %{buildroot}/doclist.lst .
+
+%files -n python3-lazy-property -f filelist.lst
+%dir %{python3_sitelib}/*
+
+%files help -f doclist.lst
+%{_docdir}/*
+
+%changelog
+* Tue Apr 11 2023 Python_Bot <Python_Bot@openeuler.org> - 0.0.1-1
+- Package Spec generated
diff --git a/sources b/sources
new file mode 100644
index 0000000..35a324a
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+c77b36ddcdc4f5cca622da4d2a8caba0  lazy-property-0.0.1.tar.gz