Pycharm开发环境设置与熟悉。
练习基本输入输出:
print('你好,{}.'.format(name))
print(sys.argv)
库的使用方法:
import ...
from ... import ...
条件语句:
if (abs(pos()))<1:
break
循环语句:
for i in range(5):
while True:
函数定义:
def mygoto(x,y):
def drawjx(r):
综合练习:画一面五星红旗,将代码与运行截图发布博客交作业。
import turtle def goto(x,y): turtle.up(); turtle.goto(x,y); turtle.down; def drawxwjx(x): turtle.begin_fill() for i in range(5): turtle.forward(x) turtle.right(144) turtle.end_fill() turtle.setup(600,400,0,0) turtle.color("yellow") turtle.bgcolor("red") goto(-260,120) turtle.begin_fill() for i in range(5): turtle.forward(100) turtle.right(144) turtle.end_fill() for i in range(4): x = 1 if i in [0,3]: x = 0 goto(-120+x*45,180-i*45) turtle.left(15-i*15) drawxwjx(30) turtle.hideturtle() turtle.done()
字符串练习:
http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html
取得校园新闻的编号
str='http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html' print(str[-9:-5])
https://docs.python.org/3/library/turtle.html
产生python文档的网址
addr1 = 'https://docs.python.org/3/library/' addr2 = '.html' addr = addr1 + 'turtle' + addr2 print(addr)
http://news.gzcc.cn/html/xiaoyuanxinwen/4.html
产生校园新闻的一系列新闻页网址
for i in range(2,10): print('http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html'.format(str(i)));
练习字符串内建函数:strip,lstrip,rstrip,split,count
用函数得到校园新闻编号
用函数统计一歌词中单词出现的次数