diff --git a/Lib/colorsys.py b/Lib/colorsys.py
index 851417b5d51..a6c0cf6a463 100644
--- a/Lib/colorsys.py
+++ b/Lib/colorsys.py
@@ -44,12 +44,18 @@ def yiq_to_rgb(y, i, q):
     r = y + 0.948262*i + 0.624013*q
     g = y - 0.276066*i - 0.639810*q
     b = y - 1.105450*i + 1.729860*q
-    if r < 0.0: r = 0.0
-    if g < 0.0: g = 0.0
-    if b < 0.0: b = 0.0
-    if r > 1.0: r = 1.0
-    if g > 1.0: g = 1.0
-    if b > 1.0: b = 1.0
+    if r < 0.0:
+        r = 0.0
+    if g < 0.0:
+        g = 0.0
+    if b < 0.0:
+        b = 0.0
+    if r > 1.0:
+        r = 1.0
+    if g > 1.0:
+        g = 1.0
+    if b > 1.0:
+        b = 1.0
     return (r, g, b)
 
 
@@ -63,30 +69,42 @@ def rgb_to_hls(r, g, b):
     minc = min(r, g, b)
     # XXX Can optimize (maxc+minc) and (maxc-minc)
     l = (minc+maxc)/2.0
-    if minc == maxc: return 0.0, l, 0.0
-    if l <= 0.5: s = (maxc-minc) / (maxc+minc)
-    else: s = (maxc-minc) / (2.0-maxc-minc)
+    if minc == maxc:
+        return 0.0, l, 0.0
+    if l <= 0.5:
+        s = (maxc-minc) / (maxc+minc)
+    else:
+        s = (maxc-minc) / (2.0-maxc-minc)
     rc = (maxc-r) / (maxc-minc)
     gc = (maxc-g) / (maxc-minc)
     bc = (maxc-b) / (maxc-minc)
-    if r == maxc: h = bc-gc
-    elif g == maxc: h = 2.0+rc-bc
-    else: h = 4.0+gc-rc
+    if r == maxc:
+        h = bc-gc
+    elif g == maxc:
+        h = 2.0+rc-bc
+    else:
+        h = 4.0+gc-rc
     h = (h/6.0) % 1.0
     return h, l, s
 
 def hls_to_rgb(h, l, s):
-    if s == 0.0: return l, l, l
-    if l <= 0.5: m2 = l * (1.0+s)
-    else: m2 = l+s-(l*s)
+    if s == 0.0:
+        return l, l, l
+    if l <= 0.5:
+        m2 = l * (1.0+s)
+    else:
+        m2 = l+s-(l*s)
     m1 = 2.0*l - m2
     return (_v(m1, m2, h+ONE_THIRD), _v(m1, m2, h), _v(m1, m2, h-ONE_THIRD))
 
 def _v(m1, m2, hue):
     hue = hue % 1.0
-    if hue < ONE_SIXTH: return m1 + (m2-m1)*hue*6.0
-    if hue < 0.5: return m2
-    if hue < TWO_THIRD: return m1 + (m2-m1)*(TWO_THIRD-hue)*6.0
+    if hue < ONE_SIXTH:
+        return m1 + (m2-m1)*hue*6.0
+    if hue < 0.5:
+        return m2
+    if hue < TWO_THIRD:
+        return m1 + (m2-m1)*(TWO_THIRD-hue)*6.0
     return m1
 
 
@@ -99,29 +117,40 @@ def rgb_to_hsv(r, g, b):
     maxc = max(r, g, b)
     minc = min(r, g, b)
     v = maxc
-    if minc == maxc: return 0.0, 0.0, v
+    if minc == maxc:
+        return 0.0, 0.0, v
     s = (maxc-minc) / maxc
     rc = (maxc-r) / (maxc-minc)
     gc = (maxc-g) / (maxc-minc)
     bc = (maxc-b) / (maxc-minc)
-    if r == maxc: h = bc-gc
-    elif g == maxc: h = 2.0+rc-bc
-    else: h = 4.0+gc-rc
+    if r == maxc:
+        h = bc-gc
+    elif g == maxc:
+        h = 2.0+rc-bc
+    else:
+        h = 4.0+gc-rc
     h = (h/6.0) % 1.0
     return h, s, v
 
 def hsv_to_rgb(h, s, v):
-    if s == 0.0: return v, v, v
+    if s == 0.0:
+        return v, v, v
     i = int(h*6.0) # XXX assume int() truncates!
     f = (h*6.0) - i
     p = v*(1.0 - s)
     q = v*(1.0 - s*f)
     t = v*(1.0 - s*(1.0-f))
     i = i%6
-    if i == 0: return v, t, p
-    if i == 1: return q, v, p
-    if i == 2: return p, v, t
-    if i == 3: return p, q, v
-    if i == 4: return t, p, v
-    if i == 5: return v, p, q
+    if i == 0:
+        return v, t, p
+    if i == 1:
+        return q, v, p
+    if i == 2:
+        return p, v, t
+    if i == 3:
+        return p, q, v
+    if i == 4:
+        return t, p, v
+    if i == 5:
+        return v, p, q
     # Cannot get here