import json,os,sys
current_dir=os.path.abspath(".")

filename=[file for file in os.listdir(current_dir) if ".txt" in file]#得到當(dāng)前目錄中，后綴為.txt的數(shù)據(jù)文件
fn=filename[0] if len(filename)==1 else "" #從list中取出第一個(gè)文件名

if fn: # means we got a valid filename
  fd=open(fn)
  content=[json.loads(line) for line in fd]
  
else:
  print("no txt file in current directory")
  sys.exit(1)
for linedict in content:
  for key,value in linedict.items():
    print(key,value)
  print("\n")

import random
from collections import Counter
fruits=[random.choice(["apple","cherry","orange","pear","watermelon","banana"]) for i in range(20)]
print(fruits) #查看所有水果出現(xiàn)的次數(shù)

cover_fruits=Counter(fruits)
for fruit,times in cover_fruits.most_common(3):
  print(fruit,times)

########運(yùn)行結(jié)果如下：apple在fruits里出了5次
apple 5  
banana 4
pear 4

import importlib
import.reload(modulename)

  from pylab import *
  from numpy import *
  from scipy import *
  import matplotlib