Start GUI file dialogues in Downloads folder

For #3

src/pydiode/gui/main.py

@@ -1,6 +1,5 @@
 import configparser
-import os
-import pathlib
+from pathlib import Path
 import sys
 from tkinter import BooleanVar, IntVar, Listbox, StringVar, Tk, ttk
 
@@ -16,7 +15,7 @@
 import pydiode.tar
 
 # Save the configuration file in the user's home folder
-CONFIG = pathlib.Path().home() / ".pydiode.ini"
+CONFIG = Path("~/.pydiode.ini").expanduser()
 
 
 def gui_main():
@@ -118,7 +117,9 @@ def gui_main():
     ttk.Entry(rx_inner, textvariable=target).grid(column=0, row=1, sticky="EW")
     rx_inner.columnconfigure(0, weight=1)
     rx_inner.rowconfigure(1, weight=1)
-    target.set(config["pydiode"].get("target", os.getcwd()))
+    target.set(
+        config["pydiode"].get("target", Path("~/Downloads").expanduser())
+    )
     ttk.Button(
         rx_inner,
         text="Browse...",

src/pydiode/gui/send.py

@@ -1,4 +1,5 @@
 import os
+from pathlib import Path
 import subprocess
 import sys
 from tkinter.filedialog import askopenfilenames
@@ -26,8 +27,8 @@ def add_source_files(sources_var, sources_list):
     :param sources_list: A list of the source files currently in the Listbox
     """
     # If files have been added, the dialogue will remember the directory.
-    # If no files have been added, start at the current working directory.
-    initialdir = None if sources_list else os.getcwd()
+    # If no files have been added, start in the Downloads folder.
+    initialdir = None if sources_list else Path("~/Downloads").expanduser()
     selected_sources = askopenfilenames(initialdir=initialdir)
     new_sources = set(selected_sources) - set(sources_list)
     if new_sources: