21.3.1 Differences and Limitations from Normal Python

(1) Python Commands

The following table shows the differences between the standard Python 3.2.3 and the command line options in the operation command python for the Switch.

• -The B option is not supported.

• -O(OO) The option is not supported.

• -The u option is not supported.

• The maximum number of parameters that can be applied when the script file is started is 32.

• The maximum number of characters that can be applied to a parameter when the script file is started is 63.

• The maximum number of characters that can be specified is 1000, including the space character.

• Parameters that can be applied when the script file is started cannot have the special characters shown in the following table.

  Table 21-13: Special characters that cannot be set

  Character name	Character
  Double quotation mark	"
  Single quotation mark	'
  Semicolon	;
  Backslash	¥
  Grave accent mark	`

(2) __pycache__ Limits

The Switch does not create the__pycache__ directory even if scripts are imported from Python.

(3) Port usage restrictions

If you use Python to bind a particular port, use port numbers 49155 through 49166 for both TCP,UDP, regardless of IPv4 or IPv6.