updated

Author: GvozdevLeonid

python_hackrf/pylibhackrf/pyhackrf.pyx

@@ -274,7 +274,13 @@ cdef class PyHackrfDevice:
 
     def pyhackrf_serialno_read(self) -> str:
         read_partid_serialno = self.pyhackrf_board_partid_serialno_read()
-        return f'{read_partid_serialno[1][0]:08x}{read_partid_serialno[1][1]:08x}{read_partid_serialno[1][2]:08x}{read_partid_serialno[1][3]:08x}'
+
+        return '{0:08x}{1:08x}{2:08x}{3:08x}'.format(
+            read_partid_serialno[1][0],
+            read_partid_serialno[1][1],
+            read_partid_serialno[1][2],
+            read_partid_serialno[1][3]
+        )
 
     def pyhackrf_set_ui_enable(self, value: bool) -> None:
         result = chackrf.hackrf_set_ui_enable(self.__hackrf_device, <uint8_t> 1 if value else 0)

python_hackrf/pylibhackrf/pyhackrf_android.pyx

@@ -273,7 +273,13 @@ cdef class PyHackrfDevice:
 
     def pyhackrf_serialno_read(self) -> str:
         read_partid_serialno = self.pyhackrf_board_partid_serialno_read()
-        return f'{read_partid_serialno[1][0]:08x}{read_partid_serialno[1][1]:08x}{read_partid_serialno[1][2]:08x}{read_partid_serialno[1][3]:08x}'
+
+        return '{0:08x}{1:08x}{2:08x}{3:08x}'.format(
+            read_partid_serialno[1][0],
+            read_partid_serialno[1][1],
+            read_partid_serialno[1][2],
+            read_partid_serialno[1][3]
+        )
 
     def pyhackrf_set_ui_enable(self, value: bool) -> None:
         result = chackrf.hackrf_set_ui_enable(self.__hackrf_device, <uint8_t> 1 if value else 0)