Python一行式代码

# 简易Web Server，可以直接快速共享文件

python -m http.server

# 脚本性能分析
python -m cProfile my_script.py

# 列表辗平
import itertools
a_list = [[1, 2], [3, 4], [5, 6]]
print(list(itertools.chain(*a_list)))
# Output: [1, 2, 3, 4, 5, 6]

# 一行式的构造器，避免类初始化时大量重复的赋值语句
class A:
    def __init__(self,a,b,c,d,e,f):
        self.__dict__.update({k:v for k,v in locals().items()})

# 一行式斐波那契
fib =  lambda x: x if x<=1 else fib(x-1) + fib(x-2)

# 一行式快排
qsort = lambda L: [] if L==[] else qsort([x for x in L[1:] if x< L[0]]) + L[0:1] + qsort([x for x in L[1:] if x>=L[0]])

# CSV file to json
python -c "import csv,json;print json.dumps(list(csv.reader(open('csv_file.csv'))))"