© Research India Publications. In this paper fragments of programs illustrating the principles of the flow chart theory by the example of the schemes of interpretation of interactive system script are presented. This paper describes the standard structural patterns of dialog interaction ‘human-computer’and provides the relevant program code for each of them in the Python language. As the interactive interaction patterns such patterns as ‘pattern of choice "to —> to + 1’("next")‘, ‘sequential interpretation of elements’, ‘pattern of the kind "if -then—else"», ‘pattern of "case" kind’, ‘pattern of "while—do" kind’, ‘pattern of "repeat — until" kind’, ‘pattern of “CALL” kind’are considered. The designed program codes may be used in the trainin...