python 提高开发效率的5个小技巧

def sum(a, b):
  return a + b

a,b = 1, 2
import pdb
pdb.set_trace()
sum(a, b)

-> sum(a, b)
(Pdb) pp a
1
(Pdb) pp b
2
(Pdb) n
--Return--
> pdb_example.py(7)<module>()->None
-> sum(a, b)
(Pdb) q
Traceback (most recent call last):
 File "pdb_example.py", line 7, in <module>
  sum(a, b)
 File "D:\dev\python3\lib\bdb.py", line 52, in trace_dispatch
  return self.dispatch_return(frame, arg)
 File "D:\dev\python3\lib\bdb.py", line 96, in dispatch_return
  if self.quitting: raise BdbQuit
bdb.BdbQuit

import pdb
pdb.set_trace()

l = [1, 3, 5, 7, 9, 11]

res = []
for item in l:
  res.append(item + 1)
print(res)

print([i + 1 for i in l])

print([i + 1 for i in l if i < 10])

l = [i for i in range(1, 100)]
print(l)

def is_odd(num):
  return num % 2 != 0

print([i for i in filter(is_odd, l)])

print([i for i in filter(lambda x: x % 2 != 0, l)])