[Python #3] create e16.py

kjg/python-the-hard-way/e16.py

@@ -0,0 +1,33 @@
+from sys import argv
+
+script, filename = argv
+
+print(f"We're going to erase {filename}.")
+print("If you don't want that, hit CTRL-C (^C).")
+print("If you do want that, hit RETURN.")
+
+input("?")
+
+print("Opening th file...")
+target = open(filename, 'w')
+
+print("Truncating the file. Goodbye!")
+target.truncate()
+
+print("Now I'm going to ask you for three lines.")
+
+line1 = input("line 1: ")
+line2 = input("line 2: ")
+line3 = input("line 3: ")
+
+print("I'm going to write these to the file.")
+
+target.write(line1)
+target.write("\n")
+target.write(line2)
+target.write("\n")
+target.write(line3)
+target.write("\n")
+
+print("And finally, we close it.")
+target.close()

kjg/python-the-hard-way/test.txt

@@ -0,0 +1,3 @@
+Mary had a little lamb
+Its fleece was white as snow
+It was also tasty

kjg/python.org

@@ -84,3 +84,5 @@ how to use an argument with input
 *** Python #3:
 **** ex15
 How to use read function from file
+**** ex16
+How to use write file