python -regular expression - list element

[antar2]

Hello,

I am a beginner in Python and am not able to use a list element for
regular expression, substitutions.

list1 = [ 'a', 'o' ]
list2 = ['star',  'day', 'work', 'hello']

Suppose that I want to substitute the vowels from list2 that are in
list1, into for example 'u'.
In my substitution, I should use the elements in list1 as a variable.
I thought about:

for x in list1:
   re.compile(x)
for y in list2:
   re.compile(y)
if x in y:
z = re.sub(x, 'u', y)
but this does not work

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reading from list with paths

[antar2]

Hello,

Suppose this is a stupid question, but as a python beginner I
encounter a lot of obstacles... so I would be very grateful with some
help for following question:

I would like to read files, of which the complete filepaths are
mentioned in another textfile. In this textfile (list.txt)  are for
example the following paths:

/data/chorec/chorec-nieuw/s01/S01C001M1/S01C001M1_1LG_f01.TextGrid
/data/chorec/chorec-nieuw/s01/S01C001M1/
S01C001M1_1LGPseudo_f01.TextGrid
/data/chorec/chorec-nieuw/s01/S01C001M1/S01C001M1_AVI1_f01.TextGrid

I know how to open and read one file in my current directory,
but after trying to find this out my self, I give up...

So could someone help me and write some code so that I know how to
open and read the content of the mentioned files.

Thanks a lot

Antar2
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reading from list with paths

[antar2]

Hello,

I would like to  read and print files, of which the complete filepaths
are
 mentioned in another textfile. In this textfile (list.txt)  are for
 example the following paths:

/data/chorec/chorec-nieuw/s01/S01C001M1/S01C001M1_1LG_f01.TextGrid
 /data/chorec/chorec-nieuw/s01/S01C001M1/
 S01C001M1_1LGPseudo_f01.TextGrid
 /data/chorec/chorec-nieuw/s01/S01C001M1/S01C001M1_AVI1_f01.TextGrid

I know how to open and read one file in my current directory,
 but after trying to find this out my self, I give up...

I already got one answer for this question, but it did not work

Thanks a lot

Antar2

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list previous or following list elements

[antar2]

Hello


Suppose I have a textfile (text1.txt) with following four words:

Apple
balcony
cartridge
damned
paper
bold
typewriter

and I want to have a python script that prints the words following the
word starting with the letter b (which would be cartridge) or
differently put, a script that prints the element following a
specified element:

I am more experienced in Perl, and a beginner in python

I wrote a script that - of course - does not work, that should print
the element in a list following the element that starts with a b

import re
f = open('text1.txt', 'r')
list1 = []
list2 = []
for line in f:
list1.append(line)
a = re.compile("^b")
int = 0
while(int <= list1[-1]):
int = int + 1
a_match = a.search(list1[int])
if(a_match):
list2.append(list1[int + 1])
print list2

I did not find information about addressing previous or following list
elements. So some help would be magnificent

Thanks a lot
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delete lines

[antar2]

I am new in python and I have the following problem:

Suppose I have a list with words of which I want to remove each time
the words in the lines below item1 and above item2:

item1
a
b
item2
c
d
item3
e
f
item4
g
h
item1
i
j
item2
k
l
item3
m
n
item4
o
p

I did not find out how to do this:

Part of my script was

f = re.compile("item\[1\]\:")
g = re.compile("item\[2\]\:")
for i, line in enumerate(list1):
f_match = f.search(line)
g_match = g.search(line)
if f_match:
if g_match:
if list1[i] > f_match:
if list1[i] < g_match:
del list1[i]


But this does not work

If someone can help me, thanks!
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start reading from certain line

[antar2]

I am a starter in python and would like to write a program that reads
lines starting with a line that contains a certain word.
For example the program starts reading the program when a line is
encountered that contains 'item 1'


The weather is nice
Item 1
We will go to the seaside
...

Only the lines coming after Item 1 should be read

Thanks!
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read file into list of lists

[antar2]

Hello,

I can not find out how to read a file into a list of lists. I know how
to split a text into a list

sentences = line.split(\n)

following text for example should be considered as a list of lists (3
columns and 3 rows), so that when I make the print statement list[0]
[0], that the word pear appears


pear noun singular
books nouns plural
table noun singular

Can someone help me?

Thanks
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common elements between list of lists and lists

[antar2]

Hello,

I am a beginner in python.
following program prints the second element in list of lists 4 for the
first elements in list 4 that are common with the elements in list 5


list4 = [['1', 'a'],['4', 'd'],['8', 'g']]
list5 = ['1', '2', '3']

for j in list4:
for k in list5:
if j[0] == k:
print j[1]

Result: a

I would like to do the same thing starting with following lists, where
the numbers in list 5 are without ''. Is there a way to convert
integers in a list to integers in '' ? This is based on a situation
where I want to find common numbers between a list and a list of lists
where the numbers in the list are without '' and the numbers in the
list of lists are with ''


list4 = [['1', 'a'],['4', 'd'],['8', 'g']]
list5 = [1, 2, 3]

This might be a stupid question, but anyway, thanks for your answer
It is not my first post on this site. In some way it is not possible
to react on the messages that I receive to thank the persons that
react. Anyway, thanks a lot


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substitution of list elements

[antar2]

I want to replace each first element in list 5 that is equal to the
first element of the list of lists4 by the fourth element. I wrote
following code that does not work:

list4 = [['1', 'a', 'b', 'c'], ['2', 'd', 't', 'e'], ['8', 'g', 'q',
'f']]
list5 = ['1', '2', '3']

for j in list4:
  for k in list5:
if j[0] == k:
k = j[3]
print list5
Wanted result: ['c', 'e', '3']

thanks!
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convert list of lists to list

[antar2]

Is there a way to convert list_of_listsA to list_of_listsB, where one
list in listof lists A is one element of listB?

list_of_listsA:
[['klas*', '*', '*'],
['mooi*', '*', '*', '*'],
['koe'],
['arm*', '*', '*(haar)'],
['groei*', '*', '*', '*', '*']]

listB:
['klas* * *', 'mooi* * * *, 'koe',  'arm* * * (haar)',  'groei* * * *
*']

Thankx!
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concatenate the elements in each list of a list of lists

[antar2]

I already asked a similar question, but encounter problems with
python...
How can I concatenate the elements in each list of a list of lists

list_of_listsA =

[['klas*', '*', '*'],
['mooi*', '*', '*', '*'],
['arm*', '*', '*(haar)']]

wanted result:

list_of_listsA =

[['klas* * *']
['mooi* * * *']
['arm* * *(haar)']]

Thanks a lot !

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