1 files changed, 47 insertions, 0 deletions
diff --git a/doc/examples/inst.py b/doc/examples/inst.py
new file mode 100644
index 0000000..892b43b
--- /dev/null
+++ b/doc/examples/inst.py
@@ -0,0 +1,47 @@
+#!/usr/bin/python3
+# example how to deal with the depcache
+
+import sys
+
+import apt
+from apt.progress import InstallProgress
+
+
+class TextInstallProgress(InstallProgress):
+    def __init__(self):
+        apt.progress.InstallProgress.__init__(self)
+        self.last = 0.0
+
+    def updateInterface(self):
+        InstallProgress.updateInterface(self)
+        if self.last >= self.percent:
+            return
+        sys.stdout.write(f"\r[{self.percent}] {self.status}\n")
+        sys.stdout.flush()
+        self.last = self.percent
+
+    def conffile(self, current, new):
+        print(f"conffile prompt: {current} {new}")
+
+    def error(self, errorstr):
+        print("got dpkg error: '%s'" % errorstr)
+
+
+cache = apt.Cache(apt.progress.OpTextProgress())
+
+fprogress = apt.progress.TextFetchProgress()
+iprogress = TextInstallProgress()
+
+pkg = cache["3dchess"]
+
+# install or remove, the importend thing is to keep us busy :)
+if pkg.is_installed:
+    print("Going to delete %s" % pkg.name)
+    pkg.mark_delete()
+else:
+    print("Going to install %s" % pkg.name)
+    pkg.mark_install()
+res = cache.commit(fprogress, iprogress)
+print(res)
+
+sys.exit(0)