Demo Hash a File

DemoDisplayHash1and256.py

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+#!Python 3
+import hashlib
+import PySimpleGUI as SG
+
+ #########################################################################
+# DisplayHash                                                            #
+#   A PySimpleGUI demo app that displays SHA1 hash for user browsed file #
+#   Useful and a recipe for GUI success                                  #
+ #########################################################################
+
+# ====____====____==== FUNCTION compute_hash_for_file(filename) ====____====____==== #
+# Reads a file, computes the Hash                                                    #
+# ---------------------------------------------------------------------------------- #
+def compute_sha1_hash_for_file(filename):
+    try:
+        x = open(filename, "rb").read()
+    except:
+        return 0
+
+    m = hashlib.sha1()
+    m.update(x)
+    f_sha = m.hexdigest()
+
+    return f_sha
+
+
+# ====____====____==== FUNCTION compute_hash_for_file(filename) ====____====____==== #
+# Reads a file, computes the Hash                                                    #
+# ---------------------------------------------------------------------------------- #
+def compute_sha256_hash_for_file(filename):
+    try:
+        f = open(filename, "rb")
+        x = f.read()
+    except:
+        return 0
+
+    m = hashlib.sha256()
+    m.update(x)
+    f_sha = m.hexdigest()
+
+    return f_sha
+
+
+ # ====____====____==== Uses A GooeyGUI GUI ====____====____== #
+#  Get the filename, display the hash, dirt simple all around   #
+ # ----------------------------------------------------------- #
+
+# ---------------------------------------------------------------------- #
+#   Compute and display SHA1 hash                                        #
+#   Builds and displays the form using the most basic building blocks    #
+# ---------------------------------------------------------------------- #
+def HashManuallyBuiltGUI():
+    # -------  Form design ------- #
+    with SG.FlexForm('SHA-1 & 256 Hash', AutoSizeText=True) as form:
+        form_rows = [[SG.Text('SHA-1 and SHA-256 Hashes for the file')],
+                     [SG.InputText(), SG.FileBrowse()],
+                     [SG.Submit(), SG.Cancel()]]
+        (button, (source_filename, )) = form.LayoutAndShow(form_rows)
+
+    if button == 'Submit':
+        if source_filename != '':
+            hash_sha1 = compute_sha1_hash_for_file(source_filename).upper()
+            hash_sha256 = compute_sha256_hash_for_file(source_filename).upper()
+            SG.MsgBox( 'Display A Hash in PySimpleGUI', 'The SHA-1 Hash for the file\n', source_filename, hash_sha1, 'SHA-256 is', hash_sha256, LineWidth=75)
+        else: SG.MsgBoxError('Display A Hash in PySimpleGUI', 'Illegal filename')
+    else:
+        SG.MsgBoxError('Display A Hash in PySimpleGUI', '* Cancelled *')
+
+
+# ---------------------------------------------------------------------- #
+#   Compute and display SHA1 hash                                        #
+#   This one cheats and uses the higher-level Get A File pre-made func   #
+#   Hey, it's a really common operation so why not?                      #
+# ---------------------------------------------------------------------- #
+def HashMostCompactGUI():
+    # -------  INPUT GUI portion  ------- #
+
+    rc, source_filename = SG.GetFileBox('Display A Hash Using PySimpleGUI',
+                                  'Display a Hash code for file of your choice')
+
+    # -------  OUTPUT GUI results portion  ------- #
+    if rc == True:
+        hash = compute_sha1_hash_for_file(source_filename).upper()
+        SG.MsgBox('Display Hash - Compact GUI', 'The SHA-1 Hash for the file\n', source_filename, hash)
+    else:
+        SG.MsgBox('Display Hash - Compact GUI', '* Cancelled *')
+
+
+# ---------------------------------------------------------------------- #
+#  Our main calls two GUIs that act identically but use different calls  #
+# ---------------------------------------------------------------------- #
+def main():
+    # HashMostCompactGUI()
+    HashManuallyBuiltGUI()
+
+# ====____====____==== 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__':
+    main()