python起步

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# Fig. D.1: test.py
# Simple program to demonstrate debugging.

# prompt user for input
integer = raw_input( "Enter an integer:\n" )
integer = int( integer )

if integer < 0:
print "%d is less than zero" % integer
else:
print "%d is not less than zero" % integer

python其实很好懂，不过要学到极致的话，就得下苦功夫。

raw_input函数是读取用户的输入的

int函数是将integer参数转换为整数