File operations in RPython are very similar with Python. The following example shows some simple use cases.
def rfile(): with open ("file.py", "r") as f: c = f.read(10) for line in c.split("\n"): print line f = open("file.py", "r") # open a file c = f.readline() # read one entire line from the file print f.tell() # return the file's current position print f.fileno() # return the integer "file descriptor" print f.isatty() # return True if the file is connected to a tty(-like) device f.close() # close a file def entry_point(argv): rfile() return 0 def target(*args): return entry_point if __name__ == "__main__": import sys; entry_point(sys.argv)
In addition to these operations and methods of the built-in file objects,
RPython’s libraries (
rpython.rlib.rfile)also provides some advanced
operations such as