class stdlib(object):
    packages = dict(
        {
            "adler32": ["hash"],
            "aes": ["crypto"],
            "ascii85": ["encoding"],
            "asn1": ["encoding"],
            "ast": ["go"],
            "atomic": ["sync"],
            "base32": ["encoding"],
            "base64": ["encoding"],
            "big": ["math"],
            "binary": ["encoding"],
            "bufio": ["bufio"],
            "build": ["go"],
            "bytes": ["bytes"],
            "bzip2": ["compress"],
            "cgi": ["net/http"],
            "cipher": ["crypto"],
            "cmplx": ["math"],
            "color": ["image"],
            "constant": ["go"],
            "context": ["context"],
            "cookiejar": ["net/http"],
            "crc32": ["hash"],
            "crc64": ["hash"],
            "crypto": ["crypto"],
            "csv": ["encoding"],
            "debug": ["runtime"],
            "des": ["crypto"],
            "doc": ["go"],
            "draw": ["image"],
            "driver": ["database/sql"],
            "dsa": ["crypto"],
            "dwarf": ["debug"],
            "ecdsa": ["crypto"],
            "elf": ["debug"],
            "elliptic": ["crypto"],
            "encoding": ["encoding"],
            "errors": ["errors"],
            "exec": ["os"],
            "expvar": ["expvar"],
            "fcgi": ["net/http"],
            "filepath": ["path"],
            "flag": ["flag"],
            "flate": ["compress"],
            "fmt": ["fmt"],
            "fnv": ["hash"],
            "format": ["go"],
            "gif": ["image"],
            "gob": ["encoding"],
            "gosym": ["debug"],
            "gzip": ["compress"],
            "hash": ["hash"],
            "heap": ["container"],
            "hex": ["encoding"],
            "hmac": ["crypto"],
            "html": ["html"],
            "http": ["net"],
            "httptest": ["net/http"],
            "httptrace": ["net/http"],
            "httputil": ["net/http"],
            "image": ["image"],
            "importer": ["go"],
            "io": ["io"],
            "iotest": ["testing"],
            "ioutil": ["io"],
            "jpeg": ["image"],
            "json": ["encoding"],
            "jsonrpc": ["net/rpc"],
            "list": ["container"],
            "log": ["log"],
            "lzw": ["compress"],
            "macho": ["debug"],
            "mail": ["net"],
            "math": ["math"],
            "md5": ["crypto"],
            "mime": ["mime"],
            "multipart": ["mime"],
            "net": ["net"],
            "os": ["os"],
            "palette": ["image/color"],
            "parse": ["text/template"],
            "parser": ["go"],
            "path": ["path"],
            "pe": ["debug"],
            "pem": ["encoding"],
            "pkix": ["crypto/x509"],
            "plan9obj": ["debug"],
            "png": ["image"],
            "pprof": ["net/http", "runtime"],
            "printer": ["go"],
            "quick": ["testing"],
            "quotedprintable": ["mime"],
            "rand": ["crypto", "math"],
            "rc4": ["crypto"],
            "reflect": ["reflect"],
            "regexp": ["regexp"],
            "ring": ["container"],
            "rpc": ["net"],
            "rsa": ["crypto"],
            "runtime": ["runtime"],
            "scanner": ["go", "text"],
            "sha1": ["crypto"],
            "sha256": ["crypto"],
            "sha512": ["crypto"],
            "signal": ["os"],
            "smtp": ["net"],
            "sort": ["sort"],
            "sql": ["database"],
            "strconv": ["strconv"],
            "strings": ["strings"],
            "subtle": ["crypto"],
            "suffixarray": ["index"],
            "sync": ["sync"],
            "syntax": ["regexp"],
            "syscall": ["syscall"],
            "syslog": ["log"],
            "tabwriter": ["text"],
            "tar": ["archive"],
            "template": ["text", "html"],
            "testing": ["testing"],
            "textproto": ["net"],
            "time": ["time"],
            "tls": ["crypto"],
            "token": ["go"],
            "trace": ["runtime"],
            "types": ["go"],
            "unicode": ["unicode"],
            "url": ["net"],
            "user": ["os"],
            "utf16": ["unicode"],
            "utf8": ["unicode"],
            "x509": ["crypto"],
            "xml": ["encoding"],
            "zip": ["archive"],
            "zlib": ["compress"],
        }
    )