2019独角兽企业重金招聘Python工程师标准>>> 
1 基础知识
2 列表和元组
3 使用字符串
4 字典
5 条件循环和其他语句
6 抽象
7 更加抽象
8 异常
9 方法属性迭代器
10 充电时刻
11 文件和素材
import re
f1 = open('/prj/python/b02/infile.txt', 'a')
f1.write('test python file1\n')
f1.flush
f1.writelines('test lines')
f1.close()
print('write file is ok.')
f = open('/prj/python/b02/infile.txt')
src = f.read()
print(src)
print('read file is ok.')
pos = f.tell()
f.seek(1, 0 - pos)
print(f.readlines())
print('read lines is ok.')
pos = f.tell()
f.seek(1, 0 - pos)
count = 0
for s in f.readlines():
li = re.findall("test", s)
if len(li) > 0:
count = count + len(li)
print "Search:", count, "test"
f.close()
r = r'test'
s = len(re.findall(r, src))
print(s)
fa = open('/prj/python/b02/infile.txt')
fb = open('/prj/python/b02/outfile.txt', 'a+')
for s in fa.readlines():
fb.write(s.replace('test', 'tst'))
fa.close()
fb.close()
12 图形用户界面
http://wxpython.org/
import wx
app = wx.App()
win = wx.Frame(None, title="Simple Editor", size=(410, 335))
win.Show()
#btn = wx.Button(win)
loadbtn = wx.Button(win, label='Open', pos=(225, 5), size=(80,25))
savebtn = wx.Button(win, label='Save', pos=(315, 5), size=(80,25))
filename = wx.TextCtrl(win, pos=(5, 5), size=(210, 25))
contents = wx.TextCtrl(win, pos=(5, 35), size=(390, 260), style=wx.TE_MULTILINE | wx.HSCROLL)
app.MainLoop()
13 数据库支持
import sqlite3
def convert(value):
if value.startswith('~'):
return value.strip('~')
if not value:
value = '0'
return float(value)
conn = sqlite3.connect('food.db')
curs = conn.cursor()
curs.execute('''
CREATE TABLE food (
id TEXT PRIMARY KEY,
desc TEXT,
water FLOAT,
kcal FLOAT,
protein FLOAT,
fat FLOAT,
ash FLOAT,
carbs FLOAT,
fiber FLOAT,
sugar FLOAT
)
''')
field_count = 10
query = 'INSERT INTO food VALUES(?,?,?,?,?,?,?,?,?,?)'
for line in open('/prj/python/b02/ABBERV.txt'):
fields = line.split('^')
vals = [convert(f) for f in fields[:field_count]]
curs.execute(query, vals)
conn.commit()
query ='SELECT * FROM food'
print query
curs.execute(query)
names = [f[0] for f in curs.description]
for row in curs.fetchall():
for pair in zip(names, row):
print '%s: %s' % pair
conn.close()
14 网络编程
from urllib import urlopen
webpage = urlopen('http://www.oschina.net/')
text = webpage.read()
print text
15 python和互联网
16 测试
17 扩展
18 程序打包
setup.py
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