Strip out Values from the KV pair in a Text File

kv2v

>> cat input.txt
k1:v1 k2:v2 k3:v3 ...
...

>> cat input.txt | python -c "import sys; \
   lines = sys.stdin.readlines(); \
   values = [[i.split(':')[1] for i in item] for item in \
   [line.split() for line in lines]]; \
   import os; [os.system('echo %s'%v) for v in \
   ['\t'.join(value) for value in values]]" > output.txt

>> cat output.txt
v1 v2 v3 ...
...