超实用的 10 段 Python 案例

def all_unique(lst):    
    return len(lst) == len(set(lst))  
      
x = [1,1,2,2,3,2,3,4,5,6]    
y = [1,2,3,4,5]    
all_unique(x) # False    
all_unique(y) # True

from collections import Counter   
 
def anagram(first, second):    
    return Counter(first) == Counter(second)    
anagram("abcd3", "3acdb") # True

import sys    
variable = 30     
print(sys.getsizeof(variable)) # 24

def byte_size(string):    
    return(len(string.encode('utf-8')))   
     
byte_size(' ') # 4    
byte_size('Hello World') # 11

n = 2; 
s ="Programming"; print(s * n); 
# ProgrammingProgramming

s = "programming is awesome"    
print(s.title()) # Programming Is Awesome

from math import ceil 
   
def chunk(lst, size):    
    return list(    
        map(lambda x: lst[x * size:x * size + size],    
            list(range(0, ceil(len(lst) / size)))))    
chunk([1,2,3,4,5],2) # [[1,2],[3,4],5]

def compact(lst):    
    return list(filter(bool, lst))    
compact([0, 1, False, 2, '', 3, 'a', 's', 34]) # [ 1, 2, 3, 'a', 's', 34 ]

array = [['a', 'b'], ['c', 'd'], ['e', 'f']]    
transposed = zip(*array)    
print(transposed) # [('a', 'c', 'e'), ('b', 'd', 'f')]

a = 3    
print( 2 < a < 8) # True    
print(1 == a < 2) # False