Added python startup script to avoid writting python interpretor hisotry in ~/.python_history

1 files changed, 64 insertions, 0 deletions

diff --git a/config/python/startup.py b/config/python/startup.py
new file mode 100644
index 0000000..900a568
--- /dev/null
+++ b/config/python/startup.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+from pathlib import Path
+
+
+def register_readline():
+    import atexit
+    try:
+        import readline
+    except ImportError:
+        return
+
+    # Reading the initialization (config) file may not be enough to set a
+    # completion key, so we set one first and then read the file.
+    readline_doc = getattr(readline, '__doc__', '')
+    if readline_doc is not None and 'libedit' in readline_doc:
+        readline.parse_and_bind('bind ^I rl_complete')
+    else:
+        readline.parse_and_bind('tab: complete')
+
+    try:
+        readline.read_init_file()
+    except OSError:
+        # An OSError here could have many causes, but the most likely one
+        # is that there's no .inputrc file (or .editrc file in the case of
+        # Mac OS X + libedit) in the expected location.  In that case, we
+        # want to ignore the exception.
+        pass
+
+    if readline.get_current_history_length() == 0:
+        # If no history was loaded, default to .python_history.
+        # The guard is necessary to avoid doubling history size at
+        # each interpreter exit when readline was already configured
+        # through a PYTHONSTARTUP hook, see:
+        # http://bugs.python.org/issue5845#msg198636
+        history = ""
+        if "XDG_CACHE_HOME" in os.environ:
+            history = Path(os.environ["XDG_CACHE_HOME"]) / "python" / "history"
+            history.parent.mkdir(parents=True, exist_ok=True)
+        else:
+            history = os.path.join(os.path.expanduser('~'),
+                                   '.python_history')
+        try:
+            readline.read_history_file(history)
+        except OSError:
+            pass
+
+        def write_history():
+            try:
+                readline.write_history_file(history)
+            except OSError:
+                # bpo-19891, bpo-41193: Home directory does not exist
+                # or is not writable, or the filesystem is read-only.
+                pass
+
+        atexit.register(write_history)
+
+
+sys.__interactivehook__ = register_readline
+
+sys.ps1 = "> "
+sys.ps2 = ". "