| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| golang.org/x/oauth2 | Package oauth2 provides support for making OAuth2 authorized and authenticated HTTP requests, as specified in RFC 6749. |
| golang.org/x/oauth2/jwt | Package jwt implements the OAuth 2.0 JSON Web Token flow, commonly known as "two-legged OAuth 2.0". |
| google.golang.org/api/bigquery/v2 | |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |