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Copy pathstring-to-file.py
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Copy pathstring-to-file.py
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94 lines (73 loc) · 1.94 KB
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#!/usr/bin/env python3
"""
Example of how to read and modify the content of a file
"""
# the name of the file
filename = "items.txt"
def menu():
"""
Print available choices and return input
"""
print(
"""
1. Show file content
2. Add item, append
3. Replace content
4. Remove an item
"""
)
return int(input("Choice: "))
def choice(inp):
"""
Check which action was chosen
"""
if inp == 1:
print(readfile())
elif inp == 2:
write_to_file("\n" + input("Item to add: "), "a")
elif inp == 3:
replace_content()
elif inp == 4:
remove_item()
else:
exit()
def readfile():
"""
Read string from file
"""
# with - as for reading a file automatically closes it after reading is done
with open(filename) as filehandle:
content = filehandle.read()
return content
def write_to_file(content, mode):
"""
Write string to file
"""
# open file with "w" to clear file from content and write new string to it
with open(filename, mode) as filehandle:
filehandle.write(content)
def replace_content():
"""
Replace content of a file with new items
"""
item = ""
result = ""
while item != "q":
result += item + "\n"
item = input("Item to add: ")
write_to_file(result.strip(), "w") # strip(), remove leading or trailing newlines
def remove_item():
"""
Remove an item from the file
"""
content = readfile()
remove = input("What item should be removed: ")
if remove in content: # check if item to remove exists
if content.index(remove) == 0: # if the item is the first line in the file
modified_content = content.replace(remove, "")
else:
modified_content = content.replace("\n" + remove, "")
write_to_file(modified_content.strip(), "w")
if __name__ == "__main__":
while(True):
choice(menu())