more invalid escape sequences

Benjamin Greiner · Benjamin Greiner · commit 3794d5e7fe1b · 2019-11-18T15:55:16.000+01:00
diff --git a/control/bdalg.py b/control/bdalg.py
@@ -62,7 +62,7 @@
 
 
 def series(sys1, *sysn):
-    """Return the series connection (... \* sys3 \*) sys2 \* sys1
+    """Return the series connection (... \\* sys3 \\*) sys2 \\* sys1
 
     Parameters
     ----------
diff --git a/control/freqplot.py b/control/freqplot.py
@@ -110,7 +110,7 @@ def bode_plot(syslist, omega=None,
         config.defaults['freqplot.number_of_samples'].
     margins : bool
         If True, plot gain and phase margin.
-    \*args, \**kwargs:
+    \\*args, \\*\\*kwargs:
         Additional options to matplotlib (color, linestyle, etc)
 
     Returns
@@ -139,7 +139,7 @@ def bode_plot(syslist, omega=None,
 
     2. If a discrete time model is given, the frequency response is plotted
     along the upper branch of the unit circle, using the mapping z = exp(j
-    \omega dt) where omega ranges from 0 to pi/dt and dt is the discrete
+    \\omega dt) where omega ranges from 0 to pi/dt and dt is the discrete
     timebase.  If not timebase is specified (dt = True), dt is set to 1.
 
     Examples
@@ -450,7 +450,7 @@ def nyquist_plot(syslist, omega=None, Plot=True, color=None,
         Used to specify the color of the plot
     labelFreq : int
         Label every nth frequency on the plot
-    \*args, \**kwargs:
+    \\*args, \\*\\*kwargs:
         Additional options to matplotlib (color, linestyle, etc)
 
     Returns
diff --git a/control/grid.py b/control/grid.py
@@ -175,7 +175,7 @@ def zgrid(zetas=None, wns=None):
         an_x = xret[an_i]
         an_y = yret[an_i]
         num = '{:1.1f}'.format(a)
-        ax.annotate("$\\frac{"+num+"\pi}{T}$", xy=(an_x, an_y), xytext=(an_x, an_y), size=9)
+        ax.annotate(r"$\frac{"+num+r"\pi}{T}$", xy=(an_x, an_y), xytext=(an_x, an_y), size=9)
 
     _final_setup(ax)
     return ax, fig
diff --git a/control/iosys.py b/control/iosys.py
@@ -1244,7 +1244,7 @@ def _parse_signal(self, spec, signame='input', dictname=None):
 
         if isinstance(spec, str):
             # If we got a dotted string, break up into pieces
-            namelist = re.split('\.', spec)
+            namelist = re.split(r'\.', spec)
 
             # For now, only allow signal level of system name
             # TODO: expand to allow nested signal names
diff --git a/control/matlab/wrappers.py b/control/matlab/wrappers.py
@@ -140,7 +140,7 @@ def dcgain(*args):
     All systems are first converted to state space form. The function then
     computes:
 
-    .. math:: gain = - C \cdot A^{-1} \cdot B + D
+    .. math:: gain = - C \\cdot A^{-1} \\cdot B + D
     '''
     #Convert the parameters to state space form
     if len(args) == 4:
diff --git a/control/statefbk.py b/control/statefbk.py
@@ -270,7 +270,7 @@ def lqr(*args, **keywords):
     The lqr() function computes the optimal state feedback controller
     that minimizes the quadratic cost
 
-    .. math:: J = \int_0^\infty (x' Q x + u' R u + 2 x' N u) dt
+    .. math:: J = \\int_0^\\infty (x' Q x + u' R u + 2 x' N u) dt
 
     The function can be called with either 3, 4, or 5 arguments:
 
