Type?"copyright",?"credits"?or?"license"?for?more?information.
IPython?2.1.0?--?An?enhanced?Interactive?Python.
->?Introduction?and?overview?of?IPython's?features.%quickref?->?Quick?reference.
help?->?Python's?own?help?system.
object->?Details?about?'object',?use?'object?'?for?extra?details.
In?[1]:?a=20
In?[2]:?b=10
In?[3]:?a%10?#余數
Out[3]:?0
In?[4]:?a/b?#商
Out[4]:?2
In?[5]:?a+b?#和
Out[5]:?30
In?[6]:?a-b?#差
Out[6]:?10
In?[7]:
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