| exp             | python          | javascript |
|-----------------|-----------------|------------|
| int('0711')     | 711             | 711        |
| int('0b11')     | invalid literal | 0          |
| int('0o11')     | invalid literal | 0          |
| int('0x11')     | invalid literal | 17         |
| int('0c11')     | invalid literal | 0          |
| int('11')       | 11              | 11         |
numbers with letters must have base

| int('0711', 0)  | invalid literal | 711        |
| int('0b11', 0)  | 3               | 0          |
| int('0o11', 0)  | 9               | 0          |
| int('0x11', 0)  | 17              | 17         |
| int('0c11', 0)  | invalid literal | 0          |
| int('11', 0)    | 11              | 11         |
base 0 works only if x[0]!=0, or if bin / hex / oct

| int('0711', 2)  | invalid literal | 0          |
| int('0b11', 2)  | 3               | 0          |
| int('0o11', 2)  | invalid literal | 0          |
| int('0x11', 2)  | invalid literal | 0          |
| int('0c11', 2)  | invalid literal | 0          |
| int('11', 2)    | 3               | 3          |
base 2 works only if all digits < 2, or with true binary

| int('0712', 2)  | invalid literal | 0          |
| int('0b12', 2)  | invalid literal | 0          |
| int('0o12', 2)  | invalid literal | 0          |
| int('0x12', 2)  | invalid literal | 0          |
| int('0c12', 2)  | invalid literal | 0          |
| int('12', 2)    | invalid literal | 1          |
same: base 2 works only if all digits < 2, or with true binary

| int('0711', 8)  | 457             | 457        |
| int('0b11', 12) | 1597            | 1597       |
| int('0o11', 8)  | 9               | 0          |
| int('0x11', 16) | 17              | 17         |
| int('0c11', 13) | 2042            | 2042       |
| int('11', ?)    | ok              | ok         |
bin must have base 0 or 2 or > 11 (b = 11)
oct must have base 0 or 8 or > 24 (o = 24)
hex must have base 0 or 16 or > 33 (x = 33)

| int('0711', 36) | 9109            | 9109       |
| int('0b11', 36) | 14293           | 14293      |
| int('0o11', 36) | 31141           | 31141      |
| int('0x11', 36) | 42805           | 42805      |
| int('0c11', 36) | 15589           | 15589      |
| int('11', 36)   | 37              | 37         |