本人使用的编辑器是pycharm，有三种注释方式：
1、用 一对””” 括起来要注释的代码块。
2、用一对”’括起来要注释的代码块。
3、选中要注释的代码，按下ctrl+/注释。
实例
#!/usr/bin/python
#coding=gbk
# Filename: if.py
#----->1.用一对"""括起来要注释的代码:
"""
number = 23
guess = int(raw_input('Enter an integer : '))
if guess == number:
print 'Congratulations, you guessed it.' # New blockstarts here
print "(but you do not win any prizes!)" # New blockends here
elif guess < number:
"""
#----->2.用一对'''括起来要注释的代码块:
'''
print 'No, it is a little higher than that' #Another block
# You can do whatever you want in a block ...
else:
'''
#----->3.选中要注释的代码，按下ctrl+/注释:
# print 'No, it is a little lower than that'
# # you must have guess > number to reach here
# print 'Done'
# # This last statement is always executed, after the ifstatement is executed
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