Python
import sys for line in sys.stdin: print line
if len(sys.argv)>1: print('option1')
import sys data = sys.stdin.readlines()print "Counted", len(data), "lines."
import sys f = open(sys.argv[1]) if len(sys.argv) > 1 else sys.stdin for line in f:
import os import re #a = str(os.listdir(path=".")) #print(str(os.system('grep 1qa ttt'))) f = open('ttt') p = re.compile('1qa') for line in f: if p.match(line): print(line,end='')
pip install impyla
#!/usr/bin/env python from impala.dbapi import connect conn = connect(host='10.146.128.130', port=21050) cur = conn.cursor() cur.execute('SHOW TABLES') for row in cur: print row[0] print cur.execute('describe 10_149_0_2') for row in cur: print row[0],"\t\t",row[1] print print "======================================"