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#!/usr/bin/env python

# Copyright 2018 Google Inc.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# [START bigtable_quickstart]

import argparse

from google.cloud import bigtable

def main(project_id="project-id", instance_id="instance-id",

table_id="my-table"):

# Creates a Bigtable client

client = bigtable.Client(project=project_id)

# Connect to an existing instance:my-bigtable-instance

instance = client.instance(instance_id)

# Connect to an existing table:my-table

table = instance.table(table_id)

key = 'r1'

row = table.read_row(key.encode('utf-8'))

column_family_id = 'cf1'

column_id = 'c1'.encode('utf-8')

value = row.cells[column_family_id][column_id][0].value.decode('utf-8')

print('Row key: {}\nData: {}'.format(key, value))

if __name__ == '__main__':

parser = argparse.ArgumentParser(

description=__doc__,

formatter_class=argparse.ArgumentDefaultsHelpFormatter)

parser.add_argument('project_id', help='Your Cloud Platform project ID.')

parser.add_argument(

'instance_id', help='ID of the Cloud Bigtable instance to connect to.')

parser.add_argument(

'--table',

help='Existing table used in the quickstart.',

default='my-table')

args = parser.parse_args()

main(args.project_id, args.instance_id, args.table)

# [END bigtable_quickstart]