# Open a file for reading, read and print one line, then read and store the next ten bytes.
var f: PythonFile = open("my_file.txt", "r")        # f = open("my_file.txt", "r")
echo(f.readline())                                  # print(f.readline())
var s: string = f.read(10)                          # s = f.read(10)
f.close()                                           # f.close()

# Open a file for writing, write "Hello World!", then write multiple lines at once.
var f: PythonFile = open("my_file.txt", "w")        # f = open("my_file.txt", "w")
f.write("Hello World!")                             # f.write("Hello World!")
f.writelines(["This", "is", "an", "example"])       # f.writelines(["This", "is", "an", "example"])
f.close()                                           # f.close()

# Open a file for reading or writing, then read and write from multiple locations
# using seek() and tell().
var f: PythonFile = open("my_file.txt", "r+")       # f = open("my_file.txt", "r+")
f.seek(10)                                          # f.seek(10)
echo(f.read())                                      # print(f.read())
echo(f.tell())                                      # print(f.tell())
f.seek(0)                                           # f.seek(0)
f.seek(-50, 2)                                      # f.seek(-50, 2)
f.write("Inserted at pos 50 from end")              # f.write("Inserted at pos 50 from end")
f.close()                                           # f.close()

# Basic with/as grammer for file operation
with open("temp.txt", "w+") as f:
    f.write("test")
    f.seek(0, 0)
    echo(f.read())