import os

file = open("blabla.txt",'r')

data = file.readlines()
for line in data:
     word = line.split()

file.close()

result = [i for i in word if i.startswith('d')]
result2 = [i for i in word if i.startswith('D')]
result0 = result + result2

file2 = open("blabla_d.txt",'w')

for i in range(len(result0)):
    file2.write(result0[i]+"\n")
print(str(i+1)+" words were recorded to "+os.path.realpath(file2.name))
file2.close()