NO1.type自动匹配类型
name="zhangsan"
age=18
print (type(name))
#type自动匹配类型
print ("name；%s,age: %d"%(name,age))
#%s 代表字符类型 %d 代表数字
print ("hi your nme:"+name+" your age:"+str(age) )
#str 将数字改成字符串进行打印
NO2.for循环
a="hello"
for i in a:
print (i)
#for （ｉｎｔ ｉ＝０；ｉ＜１０；ｉ＋＋）
for x in range(1,10,1):
print (x)
#for x in range(a,b,c)： a代表第一个参数，b代表循环次数，c代表循环递增大小
c=0
while c<10:
c+=1
print (c)
a=[‘a‘,1,‘b‘,‘hello‘]
a.append("word")
#a后面追加信息word
for i in a:
print (i)
#print type(i)
z={"key":"value","username":"zhangsan","password":123}
for i in z.keys(): # 输出key
print (i)
for x in z.values(): #输出values
print (x)
for k,v in z.items():
print (k,v)
NO3.if语句
a="hello"
b="hello word!"
if a not in b:
print ("zai")
else:
print ("no")
#in 包含 not in 不包含
a=True
if a:
print ("true")
#==相等
#<> >< != 不相等
NO4.调用time中的sleep
#from ...import .
from selenium import webdriver
from time import sleep as sl
#调用time中的sleep
#from time import *
#*代表调用全部）
def sleep(): #自定义sleep
print ("seleep")
sl(5)
print (‘end‘)
NO5.try异常处理
a=10
b=0
try:
print(a/b)
except:
print("error")
finally:
print("always excute")