python 2 (!) fix: only kwarg after *args

bnavigator · bnavigator · commit c05e17929b42 · 2020-11-17T12:47:51.000+01:00
diff --git a/control/margins.py b/control/margins.py
@@ -307,15 +307,15 @@ def stability_margins(sysdata, returnall=False, epsw=0.0):
         else:  # Discrete Time
             zargs = _poly_z_invz(sys)
             # gain margin
-            z, w_180 = _poly_z_real_crossing(*zargs, epsw)
+            z, w_180 = _poly_z_real_crossing(*zargs, epsw=epsw)
             w180_resp = evalfr(sys, z)
 
             # phase margin
-            z, wc = _poly_z_mag1_crossing(*zargs, epsw)
+            z, wc = _poly_z_mag1_crossing(*zargs, epsw=epsw)
             wc_resp = evalfr(sys, z)
 
             # stability margin
-            z, wstab = _poly_z_wstab(*zargs, epsw)
+            z, wstab = _poly_z_wstab(*zargs, epsw=epsw)
             ws_resp = evalfr(sys, z)
 
         # only keep frequencies where the negative real axis is crossed
