python3izing scripts

files/gcd-findmatch.py

@@ -1,6 +1,6 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
-import sys,os,re
+import sys, os, re
 import difflib as dl
 
 # Define color codes
@@ -10,61 +10,65 @@ Reset = "\033[0m"
 # Available shortcut keys
 key_list = "1234567890qwertyuiop"
 
+
 class getch:
     def get(self):
         import termios, tty
+
         fd = sys.stdin.fileno()
         old_settings = termios.tcgetattr(fd)
         try:
             tty.setraw(sys.stdin.fileno())
             ch = sys.stdin.read(1)
         finally:
-            termios.tcsetattr(
-                fd,
-                termios.TCSADRAIN,
-                old_settings
-            )
+            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
         return ch
 
+
 def printerr(s):
     sys.stderr.write(s + "\n")
     sys.stderr.flush()
 
+
 def errexit(s):
     printerr(s)
     sys.exit(1)
 
+
 def colorize_matches(directories, repl):
-    return [repl.sub("%s\g<1>%s"%(Green, Reset), d) for d in directories]
+    return [repl.sub("%s\g<1>%s" % (Green, Reset), d) for d in directories]
+
 
 def search_close_match(directories, key):
     """ Return a list of Components whose name closely matches key """
     match = []
     key = key.lower()
     for name in directories:
-        s = dl.SequenceMatcher(
-            None,
-            name.lower(),
-            key
-        )
+        s = dl.SequenceMatcher(None, name.lower(), key)
         if s.ratio() > 0:
-            match.append(( s.ratio(), name ))
-    match.sort(key = lambda x: x[0], reverse = True)
-    best_matches=[x[1] for x in match[0:10]]
+            match.append((s.ratio(), name))
+    match.sort(key=lambda x: x[0], reverse=True)
+    best_matches = [x[1] for x in match[0:10]]
     return best_matches
 
+
 def get_dirs(pat_dir):
 
     # list sub-folders in the folder
-    current_folders = [d for d in os.listdir(pat_dir) if os.path.isdir(os.path.join(pat_dir, d))]
+    current_folders = [
+        d for d in os.listdir(pat_dir) if os.path.isdir(os.path.join(pat_dir, d))
+    ]
     current_folders = [d for d in current_folders if not d.startswith(".")]
     current_folders.sort()
     return current_folders
 
+
 def main():
     # Print help
     if len(sys.argv) == 1 or sys.argv[-1] == "-h":
-        errexit("Guess cd: Find first match in folder, interactive if multiple matches\n  Arguments: [dir/]pattern_to_match_folders")
+        errexit(
+            "Guess cd: Find first match in folder, interactive if multiple matches\n  Arguments: [dir/]pattern_to_match_folders"
+        )
 
     pattern = ".".join(sys.argv[1:])
     pat_base = os.path.basename(pattern)
@@ -74,14 +78,14 @@ def main():
         pat_dir = "."
 
     if not os.path.exists(pat_dir):
-        errexit("%s: %sNo such folder%s"%(pat_dir, Red, Reset))
+        errexit("%s: %sNo such folder%s" % (pat_dir, Red, Reset))
 
     # list sub-folders in the folder
     current_folders = get_dirs(pat_dir)
 
     # no sub-folders
     if len(current_folders) == 0:
-        errexit("There are no subfolders in %s"%( pat_dir,))
+        errexit("There are no subfolders in %s" % (pat_dir,))
 
     # find matches
     match_case = re.compile(".*" + pat_base + ".*")
@@ -92,8 +96,8 @@ def main():
 
     # no matches, try case insensitive
     if len(matching_folders) == 0:
-        match_nocase = re.compile(".*" + pat_base + ".*",re.I)
-        repl_nocase = re.compile("(" + pat_base + ")",re.I)
+        match_nocase = re.compile(".*" + pat_base + ".*", re.I)
+        repl_nocase = re.compile("(" + pat_base + ")", re.I)
         matching_folders = [d for d in current_folders if match_nocase.match(d)]
         matches = colorize_matches(matching_folders, repl_nocase)
 
@@ -109,7 +113,7 @@ def main():
         sys.exit(0)
 
     # Many matches, ask the user for folder index
-    for i,m in enumerate(matches[0:len(key_list)]):
+    for i, m in enumerate(matches[0 : len(key_list)]):
         printerr(key_list[i] + ": " + m)
 
     if len(matches) > len(key_list):
@@ -120,9 +124,10 @@ def main():
         key_index = key_list.index(key_in)
         key_match = matching_folders[key_index]
     except (ValueError, IndexError) as err:
-        errexit("%s'%s' Not in the list%s"%(Red, key_in, Reset))
+        errexit("%s'%s' Not in the list%s" % (Red, key_in, Reset))
 
     print(os.path.join(pat_dir, key_match))
 
+
 if __name__ == "__main__":
     main()