Python_字符串格式化

 #冒泡排序
 array = [1,2,3,6,5,4]
 for i in range(len(array)):
     for j in range(i):
         if array[j] > array[j + 1]:
             array[j], array[j + 1] = array[j + 1], array[j]
 print(array)
 #字符串格式化用法
 x=123
 so="%o"%x   #8进制
 print(so)
 sh = "%x"%x #16进制
 print(sh)
 se='%e'%x
 print(se)
 print('%s'%65)  #等价于str()
 print('%s'%65333)
 print('%d,%c'%(65,65))  #使用元组对字符串进行格式化，按位置进行对应
 print(int(''))   #可以使用int()函数将合法的数字字符串转化为整数
 print('%s'%[1,2,3])
 print(str([1,2,3])) #可以使用str()函数将任意类型数据转换为字符串
 print(str((1,2,3)))
 print(str({'A':65,'B':66}))

 #使用format()方法进行格式化，该法官法更加灵活，不仅可以使用位置进行格式化，还支持使用与位置无关的参数名来进行格式化，并且支持
 #序列解包格式化字符串，为程序员提供非常大的方便
 print('{0:.3f}'.format(1/3))    #保留3位小数
 # 0.333
 print("The number {0:,} in hex is: {0:#x},i oct is {0:#o}".format(55))
 # The number 55 in hex is: 0x37,i oct is 0o67
 print('The number {0:,} in hex is: {0:x},the number {1} inn oct is {1:o}'.format(555,55))
 #The number 555 in hex is: 22b,the number 55 inn oct is 67
 print('THe number {1} in hex is: {1:#x},the number {0} in oct is {0:#o}'.format(5555,55))
 # THe number 55 in hex is: 0x37,the number 5555 in oct is 0o12663
 print('My name is {name},my age is {age},and my QQ is {qq}'.format(name='zWrite',qq='122668xx',age=25))
 # My name is zWrite,my age is 25,and my QQ is 122668xx
 position =(5,6,12)
 print('X:{0[0]};Y:{0[1]};Z:{0[2]}'.format(position)) #使用元组同时格式化多值
 # X:5;Y:6;Z:12
 weather = [('Monday','rain'),('Tuesday','sunny'),('Wednessday','sunny'),('Thursday','rain'),('Friday','cloudy')]
 formatter='Weather of "{0[0]}" is "{0[1]}"'.format
 for item in map(formatter,weather):
     print(item)
 # Weather of "Monday" is "rain"
 # Weather of "Tuesday" is "sunny"
 # Weather of "Wednessday" is "sunny"
 # Weather of "Thursday" is "rain"
 # Weather of "Friday" is "cloudy"
 from string import Template
 t = Template('My name is ${name},and is ${age} years old.') #创建模版
 d = {'name':'zWrite','age':39}
 t.substitute(d) #替换
 print(t)
 # <string.Template object at 0x101389198>
 tt = Template('My name is $name,and is $age years old.')
 tt.substitute(d)
 print(tt)
 # <string.Template object at 0x101389588>