Renamed demo files, new demo of tabbed forms

Changed filenames to remove spaces so will be easier to work with on Linux.

Demo_DuplicateFileFinder.py

@@ -0,0 +1,57 @@
+import hashlib
+import os
+import PySimpleGUI as sg
+
+
+# ====____====____==== FUNCTION DeDuplicate_folder(path) ====____====____==== #
+# Function to de-duplicate the folder passed in                               #
+# --------------------------------------------------------------------------- #
+def FindDuplicatesFilesInFolder(path):
+    shatab = []
+    total = 0
+    small_count, dup_count, error_count = 0,0,0
+    pngdir = path
+    if not os.path.exists(path):
+        sg.MsgBox('Duplicate Finder', '** Folder doesn\'t exist***', path)
+        return
+    pngfiles = os.listdir(pngdir)
+    total_files = len(pngfiles)
+    for idx, f in enumerate(pngfiles):
+        if not sg.EasyProgressMeter('Counting Duplicates', idx + 1, total_files, 'Counting Duplicate Files'):
+            break
+        total += 1
+        fname = os.path.join(pngdir, f)
+        if os.path.isdir(fname):
+            continue
+        x = open(fname, "rb").read()
+
+        m = hashlib.sha256()
+        m.update(x)
+        f_sha = m.digest()
+        if f_sha in shatab:
+            # uncomment next line to remove duplicate files
+            # os.remove(fname)
+            dup_count += 1
+            # sg.Print(f'Duplicate file - {f}')    # cannot current use sg.Print with Progress Meter
+            continue
+        shatab.append(f_sha)
+
+    msg = f'{total} Files processed\n'\
+          f'{dup_count} Duplicates found\n'
+    sg.MsgBox('Duplicate Finder Ended', msg)
+
+# ====____====____==== Pseudo-MAIN program ====____====____==== #
+# This is our main-alike piece of code                          #
+#   + Starts up the GUI                                         #
+#   + Gets values from GUI                                      #
+#   + Runs DeDupe_folder based on GUI inputs                    #
+# ------------------------------------------------------------- #
+if __name__ == '__main__':
+
+    source_folder = None
+    rc, source_folder = sg.GetPathBox('Duplicate Finder - Count number of duplicate files', 'Enter path to folder you wish to find duplicates in')
+    if rc is True and source_folder is not None:
+        FindDuplicatesFilesInFolder(source_folder)
+    else:
+        sg.MsgBoxCancel('Cancelling', '*** Cancelling ***')
+    exit(0)