Help with Python.. (1 Viewer)

[YasoR17]

I didn't know where to put this, so if it's in the wrong area please move it

So I'm pretty new with Python, and I have a little problem with a small task. I have made a list of strings of a text. It looks like this

liste = ["After", "the", "glimpse", "I", "had", "had", "of", "the", "Martians", "emerging", "from", "the", "cylinder", "in", "which", "they", "had", "come", "to", "the", "earth", "from", "their", "planet",",","a", "kind", "of", "fascination", "paralysed", "my", "actions",".", "I", "remained", "standing", "kneedeep", "in", "the", "heather",",", "staring","at", "the","mound", "that", "hid", "them", ".", "I", "was", "a", "battleground", "of", "fear", "and", "curiosity", ".", "I", "did", "not", "dare", "to", "go", "towards", "the", "pit", ".", "but", "I", "felt", "a", "passionate", "longing", "to", "peer", "into", "it", ".", "I", "began", "walking", "therefore", ",", "in", "a", "big", "curve", ",", "seeking", "some", "point", "of", "vantage", "and", "continually", "looking", "at", "the", "sand", "heaps", "that", "hid", "these", "newcomers", "to", "our", "earth", ".", "Once", "a", "leash", "of", "thin", "black", "whips", ",", "like", "the", "arms", "of", "an", "octopus", ",", "flashed", "across", "the", "sunset", "and", "was", "immediately", "withdrawn", ",", "and", "afterwards", "a", "thin", "rod", "rose", "up", ",", "joint", "by", "joint", ",", "bearing", "at", "its", "apex", "a", "circular", "disk", "that", "spun", "with", "a", "wobbling", "motion", ".", "What", "could", "be", "going", "on", "there", "?"]

And I can't figure out how to remove the two last characters of every word. So it looks something like this:

[’Aft’, ’t’, ’glimp’, ’’, ’h’, ’h’, ’’, ’t’, ’Martia’,
’emergi’, ’fr’, ’t’, ’cylind’, ’’, ’whi’, ’th’, ’h’,
’co’, ’’, ’t’, ’ear’, ’fr’, ’the’, ’plane’, ’’, ’ki’,
’’, ’fascinati’, ’paralys’, ’’, ’action’, ’’, ’remain’,
’standi’, ’kneede’, ’’, ’t’, ’heathe’, ’stari’, ’’, ’t’,
’mou’, ’th’, ’h’, ’the’, ’’, ’w’, ’’, ’battlegrou’, ’’,
’fe’, ’a’, ’curiosit’, ’’, ’d’, ’n’, ’da’, ’’, ’’, ’ba’,
’towar’, ’t’, ’pi’, ’b’, ’’, ’fe’, ’’, ’passiona’, ’longi’,
’’, ’pe’, ’in’, ’i’, ’’, ’beg’, ’walkin’, ’therefor’, ’’,
’’, ’b’, ’curv’, ’seeki’, ’so’, ’poi’, ’’, ’vanta’, ’a’,
’continual’, ’looki’, ’’, ’t’, ’sa’, ’hea’, ’th’, ’h’,
’the’, ’newcome’, ’’, ’o’, ’eart’, ’On’, ’’, ’lea’, ’’,
’th’, ’bla’, ’whip’, ’li’, ’t’, ’ar’, ’’, ’’, ’octopu’,
’flash’, ’acro’, ’t’, ’suns’, ’a’, ’w’, ’immediate’,
’withdraw’, ’a’, ’afterwar’, ’’, ’th’, ’r’, ’ro’, ’u’,
’joi’, ’’, ’join’, ’beari’, ’’, ’i’, ’ap’, ’’, ’circul’,
’di’, ’th’, ’sp’, ’wi’, ’’, ’wobbli’, ’motio’, ’Wh’,
’cou’, ’’, ’goi’, ’’, ’ther’]


If any Python experts out there could help me I'd really appreciate it

Thanks.

 

Buy on AliExpress.com

[Martin]

Best. thread. ever.


Let's take this step by step.

1) Remove the last two characters in string
Strings are iterables in Python, so they can be indexed just like lists and other iterables.
string[1] of 'string' gives 't'.
string[-1] of 'string' gives 'g'.

To extract more than one character you can give a range. These are called slices.
s[1:3] of 'string' gives 'tr'
s[1:-1] of 'string' gives 'trin'


2) Changing the list
The easiest option is to use a for loop here.

for string in liste:
    print string

But because we want to modify the element and not just output it, we can used the list's .index() method to override the current position in the list.

for string in liste:
    idx = liste.index(string)
    liste[idx] = 'a new string'

That gives you the pieces you need to do your homework :wink:

 

[YasoR17]

Thanks a lot Martin

But P) Do I need to slice every single word? Because then I need to know how many characters every one of them contains. Or?

 

[Martin]

Thanks a lot Martin

But P) Do I need to slice every single word? Because then I need to know how many characters every one of them contains. Or?

No, that's the beauty of it. When you can slice with a negative index, it simply counts the letters from the end of the string (in fact it works at both ends). Try it out.

 

[YasoR17]

Yes, but what I don't understand is how I'm going to slice every word in a string that is a text. Like this one.


string = "After the glimpse I had had of the Martians emerging from the cylinder in which they had come to the earth from their planet, a kind of fascination paralysed my actions. I remained standing kneedeep in the heather, staring at the mound that hid them. I was a battleground of fear and curiosity. I did not dare to go back towards the pit, but I felt a passionate longing to peer into it. I began walking, therefore, in a big curve, seeking some point of vantage and continually looking at the sand heaps that hid these newcomer to our earth. Once a leash of thin black whips, like the arms of an octopus, flashed across the sunset and was immediately withdrawn, and afterwards a thin rod rose up, joint by joint, bearing at its apex a circular disk that spun with a wobbling motion. What could begoing on there?"

I'm probably not seeing something, like I said very new

 

[Fake Melo]

Bigtime

 

[YasoR17]

Bigtime

??

 

[Martin]

Yes, but what I don't understand is how I'm going to slice every word in a string that is a text. Like this one.


string = "After the glimpse I had had of the Martians emerging from the cylinder in which they had come to the earth from their planet, a kind of fascination paralysed my actions. I remained standing kneedeep in the heather, staring at the mound that hid them. I was a battleground of fear and curiosity. I did not dare to go back towards the pit, but I felt a passionate longing to peer into it. I began walking, therefore, in a big curve, seeking some point of vantage and continually looking at the sand heaps that hid these newcomer to our earth. Once a leash of thin black whips, like the arms of an octopus, flashed across the sunset and was immediately withdrawn, and afterwards a thin rod rose up, joint by joint, bearing at its apex a circular disk that spun with a wobbling motion. What could begoing on there?"

I'm probably not seeing something, like I said very new

Oh, okay, you have to split the text into words then.

liste = string.split(' ')

Now you have liste with the value in your first post.

 

[V]

The geek radar is of the charts!

 

[Martin]

The geek radar is of the charts!

You don't need a radar when you're inside the fighter jet, do you?

 

[Bozi]

you need help with Python? why aren't you asking Osman how he handles his?

 

[YasoR17]

Oh, okay, you have to split the text into words then.

liste = string.split(' ')

Now you have liste with the value in your first post.

Thanks!

 

[YasoR17]

btw I managed to finish it, and found out that a while loop was much easier

mylist =[]

i = 0
while i < len(liste):
   mylist = mylist + liste[i][:-2].split()
   i = i + 1

print mylist

thanks again Martin, now I know who to contact when I need help with Python

 

[swag]

Martin -- you're geeking on Python now? My company could use you!

 

[Martin]

Martin -- you're geeking on Python now? My company could use you!

What do you mean now? I've been a python head for half a decade.

 

[swag]

What do you mean now? I've been a python head for half a decade.

We need to talk.

 

[Marty]

lmao at Martin for geeking out at the topic