Print out the length of strings on seperate lines

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Python

printing

print

So I have a file named fruits.txt and inside is:
pear
apple
orange
mandarin
watermelon
pomegranate

my goal is to print out the length of each word on different lines. So the result should look like this:

4
5
6
8
10
11

what I did in the cmd line is

file = open("fruits.txt", "r")
content = file.read()
file.close()
answer = len(content) for i in content

This gave me an error "SyntaxError: invalid syntax" and pointed to the "r" in "for". How would i solve this issue?

What I have tried:

<pre lang="Python">
file = open("fruits.txt", "r")
content = file.read()
file.close()
answer = len(content) for i in content