123132

a.py

#!/usr/lib/env python

f = open('data', 'w+')

s = {}

for line in f:
  k, v = line.strip().split('=')
  s[k.strip()] = v.strip()
  
for i in random.sample(a.items(), 3):
  f.write(str(i) + "\n")

f.close()

b.py

#!/usr/lib/env python
#open data
f = open('data', 'r')

s = {}
#turn data in to dict
for line in f:
  k, v = line.strip().split('=')
  s[k.strip()] = v.strip()

f.close()
#create and write result
f = open('result.txt', 'w')

f = open('data', 'w+')

for i in random.sample(s.items(), 3):
  f.write(str(i) + "\n")
  
f.close()

data

1 = "eadad"
2 = "dgsgsg"
3 = "fhaha"