OpenFile

Opens text file using the specified mode, returns file ID.

Syntax

OpenFile(filePath, mode)

Parameters

Parameter	Type	Description
filePath	string	Full path of the file.
mode	string	File open mode. Can be either ‘r’, ‘rt’ (read), ‘w’ or ‘wt’ (write) or ‘a’ or ‘at’ (append)

Return

Returns file ID.

Note

See Specifying Windows file paths in Python for details on specifying file paths with backslashes in Python.

Examples

Python

# open a file in read mode
f = open("C:\\Data\\parameters.txt", "r")
# read all the lines in the file and print them
if f:
    lines = f.readlines()
    f.close()
    for line in lines:
        print(line.rstrip()) # rstrip() removes end-of-line character from line

NexScript

% open a file in read mode
file = OpenFile("C:\Data\parameters.txt", "r")
% read all the lines in the file and print them
if file > 0
    line = "" % make line a string variable
    while ReadLine(file, line) > 0
        Trace(line)
    end
    CloseFile(file)
end