adding the actual cli file

salamanca/cli.py

@@ -0,0 +1,67 @@
+import argparse
+import logging
+
+from salamanca import data
+from salamanca import currency
+
+COMMANDS = {}
+
+#
+# Download wb data
+#
+
+
+def download_wb_cli(parser):
+    log = 'Print log output during download.'
+    parser.add_argument('--log', help=log, action="store_true")
+    overwrite = 'Overwrite local files if they exist.'
+    parser.add_argument('--overwrite', help=overwrite, action="store_true")
+
+
+def download_wb(log=False, overwrite=False, **kwargs):
+    if log:
+        logger = logging.getLogger()
+        logger.setLevel(logging.DEBUG)
+
+    wb = data.WorldBank()
+    wb.iso_metadata(overwrite=overwrite)
+    for ind in data.INDICATORS_WB:
+        wb.query(ind, overwrite=overwrite)
+
+
+COMMANDS['download_wb'] = (
+    """Download national World Bank data to your machine""",
+    download_wb_cli,
+    download_wb,
+)
+
+
+#
+# Currency Exchange
+#
+
+# implement this
+
+def main():
+    descr = """
+    Main CLI for salamanca.
+    """
+    parser = argparse.ArgumentParser(
+        description=descr,
+        formatter_class=argparse.RawDescriptionHelpFormatter
+    )
+    subparsers = parser.add_subparsers(dest='command')
+
+    for cmd in COMMANDS:
+        cli_help = COMMANDS[cmd][0]
+        cli_func = COMMANDS[cmd][1]
+        subparser = subparsers.add_parser(cmd, help=cli_help)
+        cli_func(subparser)
+
+    args = parser.parse_args()
+    cmd = args.command
+    cmd_func = COMMANDS[cmd][2]
+    cmd_func(**vars(args))
+
+if __name__ == '__main__':
+    main()