[roottest] Implement Python linter suggestions to driveTabCom.py

Author: guitargeek

roottest/root/rint/driveTabCom.py

@@ -1,27 +1,26 @@
 # Pretend to ROOT that its input is a tty, to enable tab completion.
-from __future__ import print_function
-import pty, os, subprocess, sys, select
+
+import os
+import pty
+import select
+import subprocess
+import sys
 
 # Create a tty: master is our side, slave is what we pass as Popen's stdin.
 # This makes ROOT believe that its stdin is a tty.
 master, slave = pty.openpty()
-cmd = ['root.exe', '-b', '-l']
-proc = subprocess.Popen(cmd,
-                        stdin = slave,
-                        stdout = slave,
-                        stderr = subprocess.PIPE,
-                        close_fds=True
-                        )
+cmd = ["root.exe", "-b", "-l"]
+proc = subprocess.Popen(cmd, stdin=slave, stdout=slave, stderr=subprocess.PIPE, close_fds=True)
 
 # Now we need to pass what's on our stdin to ROOT's stdin
 # and read what's on the slave's stdout.
 while True:
-    data = os.read(0, 1024);
+    data = os.read(0, 1024)
     if len(data) == 0:
         break
-    #ret = master_stdin.write(data)
+    # ret = master_stdin.write(data)
     os.write(master, data)
-    while select.select([master],[],[],1.0)[0]:
+    while select.select([master], [], [], 1.0)[0]:
         os.write(1, os.read(master, 1))
 
 # Wait until the subprocess has exited...
@@ -31,12 +30,11 @@
 out, err = proc.communicate()
 
 # Then write the subprocess's output to our output streams.
-#sys.stdout.write(out.decode('utf-8'))
-sys.stderr.write(err.decode('utf-8'))
+# sys.stdout.write(out.decode('utf-8'))
+sys.stderr.write(err.decode("utf-8"))
 
 # No need to wait; the subprocess is dead.
-while select.select([master],[],[],0.0)[0]:
-  sys.stdout.write(os.read(master, 1).decode('utf-8'))
+while select.select([master], [], [], 0.0)[0]:
+    sys.stdout.write(os.read(master, 1).decode("utf-8"))
 
 exit(proc.returncode)
-