disable readline functionality on windows

scripts/dream.py

@@ -1,11 +1,16 @@
 #!/usr/bin/env python
-
-import readline
 import argparse
 import shlex
 import atexit
 import os
 
+# readline will be disabled on windows systems
+try:
+    import readline
+    readline_available = True
+except:
+    readline_available = False
+
 debugging = False
 
 def main():
@@ -26,6 +31,7 @@ def main():
         weights = "models/ldm/stable-diffusion-v1/model.ckpt"
 
     # command line history will be stored in a file called "~/.dream_history"
+    if readline_available:
         setup_readline()
 
     print("* Initializing, be patient...\n")
@@ -174,6 +180,7 @@ def create_cmd_parser():
     parser.add_argument('-f','--strength',default=0.75,type=float,help="strength for noising/unnoising. 0.0 preserves image exactly, 1.0 replaces it completely")
     return parser
 
+if readline_available:
     def setup_readline():
         readline.set_completer(Completer(['--steps','-s','--seed','-S','--iterations','-n','--batch_size','-b',
                                           '--width','-W','--height','-H','--cfg_scale','-C','--grid','-g',