Revert "iperf3.py: run black"

This reverts commit 0171c50.

Instructions told me to run black, so I did, but then the build failed with
formatting changes from ... running black

Author: graeme-winter

python-ecosys/iperf3/iperf3.py

@@ -117,9 +117,7 @@ def print_line(self, ta, tb, nb, np, nm, extra=""):
         if self.udp:
             if self.reverse:
                 print(
-                    " %6.3f ms  %u/%u (%.1f%%)"
-                    % (0, nm, np, 100 * nm / (max(1, np + nm))),
-                    end="",
+                    " %6.3f ms  %u/%u (%.1f%%)" % (0, nm, np, 100 * nm / (max(1, np + nm))), end=""
                 )
             else:
                 print("  %u" % np, end="")
@@ -337,9 +335,7 @@ def server():
 
 
 def client(host, udp=False, reverse=False, bandwidth=10 * 1024 * 1024):
-    print(
-        "CLIENT MODE:", "UDP" if udp else "TCP", "receiving" if reverse else "sending"
-    )
+    print("CLIENT MODE:", "UDP" if udp else "TCP", "receiving" if reverse else "sending")
 
     param = {
         "client_version": "3.6",
@@ -352,9 +348,7 @@ def client(host, udp=False, reverse=False, bandwidth=10 * 1024 * 1024):
     if udp:
         param["udp"] = True
         param["len"] = 1500 - 42
-        param[
-            "bandwidth"
-        ] = bandwidth  # this should be should be intended bits per second
+        param["bandwidth"] = bandwidth  # this should be should be intended bits per second
         udp_interval = 1000000 * 8 * param["len"] // param["bandwidth"]
     else:
         param["tcp"] = True
@@ -403,9 +397,7 @@ def client(host, udp=False, reverse=False, bandwidth=10 * 1024 * 1024):
                     if udp:
                         if reverse:
                             recvninto(s_data, buf)
-                            udp_in_sec, udp_in_usec, udp_in_id = struct.unpack_from(
-                                ">III", buf, 0
-                            )
+                            udp_in_sec, udp_in_usec, udp_in_id = struct.unpack_from(">III", buf, 0)
                             # print(udp_in_sec, udp_in_usec, udp_in_id)
                             if udp_in_id != udp_packet_id + 1:
                                 stats.add_lost_packets(udp_in_id - (udp_packet_id + 1))
@@ -417,12 +409,7 @@ def client(host, udp=False, reverse=False, bandwidth=10 * 1024 * 1024):
                                 udp_last_send += udp_interval
                                 udp_packet_id += 1
                                 struct.pack_into(
-                                    ">III",
-                                    buf,
-                                    0,
-                                    t // 1000000,
-                                    t % 1000000,
-                                    udp_packet_id,
+                                    ">III", buf, 0, t // 1000000, t % 1000000, udp_packet_id
                                 )
                                 n = s_data.sendto(buf, ai[-1])
                                 stats.add_bytes(n)
@@ -505,9 +492,7 @@ def client(host, udp=False, reverse=False, bandwidth=10 * 1024 * 1024):
                 elif cmd == DISPLAY_RESULTS:
                     s_ctrl.sendall(bytes([IPERF_DONE]))
                     s_ctrl.close()
-                    time.sleep(
-                        1
-                    )  # delay so server is ready for any subsequent client connections
+                    time.sleep(1)  # delay so server is ready for any subsequent client connections
                     return
 
         stats.update()