<p>只需要返回值而不是打印它们:</p>
<pre><code>def doomsday(y):
"""
>>> doomsday(2012)
3
>>> doomsday(1899)
2
>>> doomsday(1923)
3
>>> doomsday(10000)
-1
>>> doomsday(1756)
-1
>>> type(doomsday(2010))
<class 'int'>
"""
try:
y
except ValueError:
return
if y in range (1800, 1899+1):
x = 5
w = y%100
a = w//12
b = w%12
c = b//4
d = (a + b + c)%7
t = x + d
if t>6:
t = t - 7
return t
else:
return t
elif y in range (1900, 1999+1):
x = 3
w = y%100
a = w//12
b = w%12
c = b//4
d = (a + b + c)%7
t = x + d
if t>6:
t = t - 7
return t
else:
return t
elif y in range (2000, 2099+1):
x = 2
w = y%100
a = w//12
b = w%12
c = b//4
d = (a + b + c)%7
t = x + d
if t>6:
t = t - 7
return t
else:
return t
elif y in range (2100, 2199+1):
x = 0
w = y%100
a = w//12
b = w%12
c = b//4
d = (a + b + c)%7
t = x + d
if t>6:
t = t - 7
return t
else:
return t
else:
x = -1
return x
</code></pre>