Merge pull request #5176 from taosdata/feature/sangshuduo/TD-2771-python-taosdemo

Feature/sangshuduo/td 2771 python taosdemo

tests/examples/python/taosdemo/README.md

+install build environment
+===
+/usr/bin/python3 -m pip install -r requirements.txt
+
+run python version taosdemo
+===
+Usage: ./taosdemo.py [OPTION...]
+
+Author: Shuduo Sang <sangshuduo@gmail.com>
+
+	-H, --help                        Show usage.
+
+	-N, --native                      flag, Use native interface if set. Default is using RESTful interface.
+	-h, --host <hostname>             host, The host to connect to TDengine. Default is localhost.
+	-p, --port <port>                 port, The TCP/IP port number to use for the connection. Default is 0.
+	-u, --user <username>             user, The user name to use when connecting to the server. Default is 'root'.
+	-P, --password <password>         password, The password to use when connecting to the server. Default is 'taosdata'.
+	-l, --colsPerRec <number>         num_of_columns_per_record, The number of columns per record. Default is 3.
+	-d, --dbname <dbname>             database, Destination database. Default is 'test'.
+	-a, --replica <replications>      replica, Set the replica parameters of the database, Default 1, min: 1, max: 5.
+	-m, --tbname <table prefix>       table_prefix, Table prefix name. Default is 't'.
+	-M, --stable                      flag, Use super table. Default is no
+	-s, --stbname <stable prefix>     stable_prefix, STable prefix name. Default is 'st'
+	-Q, --query <DEFAULT | NO | command>   query, Execute query command. set 'DEFAULT' means select * from each table
+	-T, --threads <number>            num_of_threads, The number of threads. Default is 1.
+	-C, --processes <number>          num_of_processes, The number of threads. Default is 1.
+	-r, --batch <number>              num_of_records_per_req, The number of records per request. Default is 1000.
+	-t, --numOfTb <number>            num_of_tables, The number of tables. Default is 1.
+	-n, --numOfRec <number>           num_of_records_per_table, The number of records per table. Default is 1.
+	-c, --config <path>               config_directory, Configuration directory. Default is '/etc/taos/'.
+	-x, --inserOnly                   flag, Insert only flag.
+	-O, --outOfOrder                  out of order data insert, 0: In order, 1: Out of order. Default is in order.
+	-R, --rateOOOO <number>           rate, Out of order data's rate--if order=1 Default 10, min: 0, max: 50.
+	-D, --deleteMethod <number>       Delete data methods 0: don't delete, 1: delete by table, 2: delete by stable, 3: delete by database.
+	-v, --verbose                     Print verbose output
+	-g, --debug                       Print debug output
+	-y, --skipPrompt                  Skip read key for continous test, default is not skip
+

tests/examples/python/taosdemo/requirements.txt

+##
+######## example-requirements.txt #######
+##
+####### Requirements without Version Specifiers ######
+requests
+multipledispatch
+#beautifulsoup4
+##
+####### Requirements with Version Specifiers ######
+##   See https://www.python.org/dev/peps/pep-0440/#version-specifiers
+#docopt == 0.6.1             # Version Matching. Must be version 0.6.1
+#keyring >= 4.1.1            # Minimum version 4.1.1
+#coverage != 3.5             # Version Exclusion. Anything except version 3.5
+#Mopidy-Dirble ~= 1.1        # Compatible release. Same as >= 1.1, == 1.*
+##
+####### Refer to other requirements files ######
+#-r other-requirements.txt
+##
+##
+####### A particular file ######
+#./downloads/numpy-1.9.2-cp34-none-win32.whl
+#http://wxpython.org/Phoenix/snapshot-builds/wxPython_Phoenix-3.0.3.dev1820+49a8884-cp34-none-win_amd64.whl
+##
+####### Additional Requirements without Version Specifiers ######
+##   Same as 1st section, just here to show that you can put things in any order.
+#rejected
+#green
+##