4.2.2.2. SQLite

SqliteTableWriter class can write a table to a SQLite database file from a matrix of data.

Sample Code:

Write a SQLite table

import pytablewriter

def main():
    writer = pytablewriter.SqliteTableWriter()
    writer.open("sample.sqlite")

    # create the first table
    writer.table_name = "example"
    writer.headers = ["int", "float", "str", "bool", "mix", "time"]
    writer.value_matrix = [
        [0,   0.1,      "hoge", True,   0,      "2017-01-01 03:04:05+0900"],
        [2,   "-2.23",  "foo",  False,  None,   "2017-12-23 12:34:51+0900"],
        [3,   0,        "bar",  "true",  "inf", "2017-03-03 22:44:55+0900"],
        [-10, -9.9,     "",     "FALSE", "nan", "2017-01-01 00:00:00+0900"],
    ]
    writer.write_table()

    # write the second table
    writer.table_name = "Timezone"
    writer.headers = [
        "zone_id", "abbreviation", "time_start", "gmt_offset", "dst",
    ]
    writer.value_matrix = [
        ["1", "CEST", "1017536400", "7200", "1"],
        ["1", "CEST", "1048986000", "7200", "1"],
        ["1", "CEST", "1080435600", "7200", "1"],
        ["1", "CEST", "1111885200", "7200", "1"],
        ["1", "CEST", "1143334800", "7200", "1"],
    ]
    writer.write_table()

    writer.close()

if __name__ == "__main__":
    main()

Output:

$ sqlite3 sample.sqlite
sqlite> .schema
CREATE TABLE 'example' (int INTEGER, float REAL, str TEXT, bool TEXT, mix REAL, time TEXT);
CREATE TABLE 'Timezone' ("zone_id" INTEGER, abbreviation TEXT, "time_start" INTEGER, "gmt_offset" INTEGER, dst INTEGER);
sqlite> select * from example;
0|0.1|hoge|1|0.0|2017-01-01 03:04:05+0900
2|-2.23|foo|0||2017-12-23 12:34:51+0900
3|0.0|bar|1|Inf|2017-03-03 22:44:55+0900
-10|-9.9||0||2017-01-01 00:00:00+0900
sqlite> select * from Timezone;
1|CEST|1017536400|7200|1
1|CEST|1048986000|7200|1
1|CEST|1080435600|7200|1
1|CEST|1111885200|7200|1
1|CEST|1143334800|7200|1