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How to delete a user specified line from a text file in python? (The file contains different lines with dictionary)
There is a text file my_file.txt which contains several rows of dictionary items {big: small} {high: low} {thin: thick} How to delete any item from this file that user chooses?
18 Antworten
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To delete a specified line from a text file can be done for example in this way:
https://code.sololearn.com/c6ej3sFhb0aj/?ref=app
But for a very big number of data records it would be recomended to use a database for the application.
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I see . Thats one way to do it glad you figured it out
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with open('scratch_4.txt', 'r+') as file:
with open('new.txt', 'w') as new_file:
for line in file:
line = line.strip()
if remove_item in line:
continue:
new_file.write(line)
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Title asks how to delete a line from a text file but in Description it asks how to delete any item - presumably was referring to the dictionary item - not the line.
Please clarify or edit the post to confirm which one it is, even better ...
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can the user chooseJust 1 or multiple, if the user pick big can he also pick small or is big the key and small the value which means big gets deleted as a whole?
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Only one item can be chosen at a time. Input will be key only. Using key, I map value and identify the item.
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Did you try to do it ? Neethu Nath
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I tried to use line.strip() but I cannot check if a dictionary in line
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Can you show ?
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It is giving error
TypeError: 'in <string>' requires string as left operand, not dict
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Youre pretty close remove the + from read mode, for line in file.readlines() remove reset of line below and just print line
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then you can continue from there repost your code
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Oh forgot it might overwite file so it may not print anything
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https://pastebin.com/Cq9d3HRY pw: booker
Change text_file to w.e your file is
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I changed the logic completely and solved this
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Awsome ! :D can i see your newly logic ?
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I used single dictionary to add all inputs instead of each item in a row
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Thank you for trying to help me