nothing printed out even for some lines where print() is out of continue block

Question

I have a file ~/practice/search_from that looks like this:

From i
ssdfadfksjaflkf
asdfasf
adf
sd
fd
fs
sgdggggggggggggsd
gsg
sdg
From j
dasdfewf
sdfas
adsf

I want to print lines that starts with From.

So I did in the python prompt the following :

>>> fhandle=open('practice/search_from')
>>> for line in fhandle:
...    if not line.startswith('From '):
...     continue
...    else:
...     print(line.rstrip())
... 
From i
From j

This code seems to work fine.

However, when I put

>>> fhandle=open('practice/search_from')
>>> for line in fhandle:
...     line = line.rstrip()
...     if not line.startswith('From:') :
...         continue
...     print(line)
... 

or

>>> fhandle=open('practice/search_from')
>>> for line in fhandle:
...     line = line.rstrip()
...     if not line.startswith('From:') :
...         continue
...     else:
...         print(line)

nothing prints out. Why is it like this? Is there a way to fix the last two codes?

Thank you very much.

Answer 1

Your codes are fine, except, you are searching with From:.

Remove the colon(:) from your codes, and it will work properly:

In [2296]: fhandle=open('practice/search_from')

In [2297]: for line in fhandle:
      ...:     line = line.rstrip()
      ...:     if not line.startswith('From'):
      ...:         continue
      ...:     print(line)
      ...:     
From i
From j