分割字符串:
string = "string1" s = string.split() #以空格、多空格、 、 分割 s = string.split('-') #使用‘-’分割 #按条件(',', '.', ' ')分割字符串 for i in (',', '.', ' '): s = string.replace(i, ' ') s = s.split()
排序sorted():
#格式: sorted(list, key, reverse=False) #key设定: def bigger_price(data): return sorted(data, key=lambda x:x['price'], reverse=True) print(bigger_price([ {"name": "bread", "price": 100}, {"name": "wine", "price": 138}, {"name": "meat", "price": 15}, {"name": "water", "price": 1} ]))
out:
[ {"name": "wine", "price": 138}, {"name": "bread", "price": 100}, {"name": "meat", "price": 15}, {"name": "water", "price": 1} ]
控制输出位数:
>>> a = 12.1234 >>> b = 12 >>> '%.3f ' % a 12.123 >>> '%.6f ' % a 12.123400 >>> '%4d ' % b 12 >>> '%04d ' % b 0012
注:可以通过round函数实现,通过参数控制保留小数位数
>>> a = 12.1234
>>> b = 3
>>> round(a, b)
12.123