# 9.1 review exercises

'''

In order to run correctly, this script first needs to

be placed in the Chapter 10 "practice_files" folder.

(File paths are covered in section 10.2)

'''

# Read a text file by looping over individual lines

my_poem = open("poem.txt", "r")

for line in my_poem.readlines():

# Replace automatic line break at end of line;

# file already contains newline characters

print(line,)

my_poem.close()

# Print some blank lines to separate the two examples

print("\n\n")

# Use "with" to automatically close a file when finished

with open("poem.txt", "r") as my_poem:

for line in my_poem.readlines():

print(line,)

# Write the contents of one file into another, line-by-line

poem_in = open("poem.txt", "r")

poem_out = open("output.txt", "w")

for line in poem_in.readlines():

poem_out.write(line)

poem_in.close()

poem_out.close()

# Repeat the previous exercise using the "with" keyword

# (This will overwrite the previous output file.)

with open("poem.txt", "r") as poem_in, open("output.txt", "w") as poem_out:

for line in poem_in.readlines():

poem_out.write(line)

# Append a new line to the end of "output.txt"

# (Need to start on a new line, so add "\n" to the beginning.)

with open("output.txt", "a") as poem_append:

poem_append.write("\nThus ends the haiku.")