懒人的PYTHON.ppt

懒人的PYTHON
smallfish
能少敲就少敲点
键盘的敲击次数有限
手指辛苦程度
阅读难度指数
能少敲就少敲点
f = open('')
while True:
line = ()
if not line:
break
print line
()
with open('') as f:
line = ()
print line
能少敲就少敲点
if var1 != 0:
pass
if var2 != None:
pass
if len(list1) > 0:
pass
if ('a'):
pass
if not var1:
pass
if not var2:
pass
If 'a' in dict1:
pass
能少敲就少敲点
dict1 = {'name': 'smallfish', 'age': 20}
print 'name: ' + dict1['name'] + ', age: ' + str(dict1['age'])
print 'name: %s, age: %d' % (dict1['name'], dict1['age'])
print 'name: %(name)s, age: %(age)d' % dict1
能少敲就少敲点
str1 = 'abcde'
print str1[:3] -> 'abc'
print str1[3:] -> 'de'
print str1[:-2] -> 'abc'
print str1[::-1] -> 'edcba'
能少敲就少敲点
list1 = [11, 22, 33, 11, 44, 22]
list2 = []
for e in list1:
if e not in list2:
(e)
list3 = list(set(list1))
能少敲就少敲点
list1 = [11, 22, 33, 11, 44, 22]
list2 = []
for e in list1:
if e % 2 == 0:
(e)
list3 = [e for e in list1 if e % 2 == 0]
能不重复就不重复
时间宝贵
重复劳动
干点别的...
能不重复就不重复
http://pypi.