# Reopen stdin, out, err, on pipe ends:
os.dup2(cRp, self.in_fd) # cRp = sys.stdin
os.dup2(cWp, self.out_fd) # cWp = sys.stdout
# Reopen stdin, out, err, on pipe ends:
os.dup2(cRp, self.in_fd) # cRp = sys.stdin
os.dup2(cWp, self.out_fd) # cWp = sys.stdout