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How to combine every line with it's subsequent line in a text file

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1

1

I have a text file z.txt. It looks like this:

alcoholic
alert
algebra
alibi
blablabla
...

How can I use python to make each line look like this (combined with it's subsequent line):

alcoholic alert
alert algebra
algebra alibi
alibi blablabla
blablabla ...

The incomplete code I have looks like this:

with open('z.txt','r') as inF:
 for line in inF:
 line =

Any help would be appreciated. Thanks.

python-2.7

share|improve this question

edited Mar 27 at 3:23

Neal

asked Mar 27 at 2:44

NealNeal

1555 bronze badges

add a comment | 

1

1

I have a text file z.txt. It looks like this:

alcoholic
alert
algebra
alibi
blablabla
...

How can I use python to make each line look like this (combined with it's subsequent line):

alcoholic alert
alert algebra
algebra alibi
alibi blablabla
blablabla ...

The incomplete code I have looks like this:

with open('z.txt','r') as inF:
 for line in inF:
 line =

Any help would be appreciated. Thanks.

python-2.7

share|improve this question

edited Mar 27 at 3:23

Neal

asked Mar 27 at 2:44

NealNeal

1555 bronze badges

add a comment | 

I have a text file z.txt. It looks like this:

alcoholic
alert
algebra
alibi
blablabla
...

How can I use python to make each line look like this (combined with it's subsequent line):

alcoholic alert
alert algebra
algebra alibi
alibi blablabla
blablabla ...

The incomplete code I have looks like this:

with open('z.txt','r') as inF:
 for line in inF:
 line =

Any help would be appreciated. Thanks.

python-2.7

share|improve this question

edited Mar 27 at 3:23

Neal

asked Mar 27 at 2:44

NealNeal

1555 bronze badges

alcoholic
alert
algebra
alibi
blablabla
...

alcoholic alert
alert algebra
algebra alibi
alibi blablabla
blablabla ...

with open('z.txt','r') as inF:
 for line in inF:
 line =

share|improve this question

edited Mar 27 at 3:23

Neal

asked Mar 27 at 2:44

NealNeal

1555 bronze badges

share|improve this question

edited Mar 27 at 3:23

Neal

asked Mar 27 at 2:44

NealNeal

1555 bronze badges

asked Mar 27 at 2:44

NealNeal

1555 bronze badges

asked Mar 27 at 2:44

NealNeal

1555 bronze badges

2 Answers
2

active

oldest

votes

1

I am going to construct a list containing the lines of the desired output. Finally, I'll write those lines to a file named z_out.txt.

Let suppose your z.txt has the following contents in it.

z.txt

alcoholic
alert
algebra
alibi
blablabla

Now, you can try like this.

construct.py

output_lines = []

with open("z.txt") as f:
 lines = f.readlines()
 l = len(lines)

 if l <= 1:
 if l == 1:
 output_lines = lines[0]
 else:
 # strip() is to remove `n` from end of `lines[index]`
 output_lines = [lines[index].strip() + ' ' + lines[index + 1] for index in range(l-1)]

print(output_lines)
# ['alcoholic alertn', 'alert algebran', 'algebra alibin', 'alibi blablabla']

# If you wish to save it in a file named `z_out.txt`
with open("z_out.txt", "w") as f:
 f.writelines(output_lines)

z_out.txt

alcoholic alert
alert algebra
algebra alibi
alibi blablabla

share|improve this answer

edited Mar 27 at 3:39

answered Mar 27 at 3:00

hygullhygull

4,77322 gold badges1717 silver badges3232 bronze badges

add a comment | 

1

Here's a possibility using list comprehension, giving you the output in the form of a list.

with open('z.txt','r') as f: 
 wordlist = f.read().split('n')

>>>wordlist
['alcoholic', 'alert', 'algebra', 'alibi', 'blablabla']

combineduo = [' '.join([x.strip(), y.strip()]) for x,y in zip(wordlist[:-1],wordlist[1:])]

>>>combineduo
['alcoholic alert', 'alert algebra', 'algebra alibi', 'alibi blablabla']

share|improve this answer

answered Mar 27 at 3:19

kerweikerwei

1,53411 gold badge99 silver badges2020 bronze badges

add a comment | 

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1

I am going to construct a list containing the lines of the desired output. Finally, I'll write those lines to a file named z_out.txt.

Let suppose your z.txt has the following contents in it.

z.txt

alcoholic
alert
algebra
alibi
blablabla

Now, you can try like this.

construct.py

output_lines = []

with open("z.txt") as f:
 lines = f.readlines()
 l = len(lines)

 if l <= 1:
 if l == 1:
 output_lines = lines[0]
 else:
 # strip() is to remove `n` from end of `lines[index]`
 output_lines = [lines[index].strip() + ' ' + lines[index + 1] for index in range(l-1)]

print(output_lines)
# ['alcoholic alertn', 'alert algebran', 'algebra alibin', 'alibi blablabla']

# If you wish to save it in a file named `z_out.txt`
with open("z_out.txt", "w") as f:
 f.writelines(output_lines)

z_out.txt

alcoholic alert
alert algebra
algebra alibi
alibi blablabla

share|improve this answer

edited Mar 27 at 3:39

answered Mar 27 at 3:00

hygullhygull

4,77322 gold badges1717 silver badges3232 bronze badges

add a comment | 

1

I am going to construct a list containing the lines of the desired output. Finally, I'll write those lines to a file named z_out.txt.

Let suppose your z.txt has the following contents in it.

z.txt

alcoholic
alert
algebra
alibi
blablabla

Now, you can try like this.

construct.py

output_lines = []

with open("z.txt") as f:
 lines = f.readlines()
 l = len(lines)

 if l <= 1:
 if l == 1:
 output_lines = lines[0]
 else:
 # strip() is to remove `n` from end of `lines[index]`
 output_lines = [lines[index].strip() + ' ' + lines[index + 1] for index in range(l-1)]

print(output_lines)
# ['alcoholic alertn', 'alert algebran', 'algebra alibin', 'alibi blablabla']

# If you wish to save it in a file named `z_out.txt`
with open("z_out.txt", "w") as f:
 f.writelines(output_lines)

z_out.txt

alcoholic alert
alert algebra
algebra alibi
alibi blablabla

share|improve this answer

edited Mar 27 at 3:39

answered Mar 27 at 3:00

hygullhygull

4,77322 gold badges1717 silver badges3232 bronze badges

add a comment | 

I am going to construct a list containing the lines of the desired output. Finally, I'll write those lines to a file named z_out.txt.

Let suppose your z.txt has the following contents in it.

z.txt

alcoholic
alert
algebra
alibi
blablabla

Now, you can try like this.

construct.py

output_lines = []

with open("z.txt") as f:
 lines = f.readlines()
 l = len(lines)

 if l <= 1:
 if l == 1:
 output_lines = lines[0]
 else:
 # strip() is to remove `n` from end of `lines[index]`
 output_lines = [lines[index].strip() + ' ' + lines[index + 1] for index in range(l-1)]

print(output_lines)
# ['alcoholic alertn', 'alert algebran', 'algebra alibin', 'alibi blablabla']

# If you wish to save it in a file named `z_out.txt`
with open("z_out.txt", "w") as f:
 f.writelines(output_lines)

z_out.txt

alcoholic alert
alert algebra
algebra alibi
alibi blablabla

share|improve this answer

edited Mar 27 at 3:39

answered Mar 27 at 3:00

hygullhygull

4,77322 gold badges1717 silver badges3232 bronze badges

alcoholic
alert
algebra
alibi
blablabla

output_lines = []

with open("z.txt") as f:
 lines = f.readlines()
 l = len(lines)

 if l <= 1:
 if l == 1:
 output_lines = lines[0]
 else:
 # strip() is to remove `n` from end of `lines[index]`
 output_lines = [lines[index].strip() + ' ' + lines[index + 1] for index in range(l-1)]

print(output_lines)
# ['alcoholic alertn', 'alert algebran', 'algebra alibin', 'alibi blablabla']

# If you wish to save it in a file named `z_out.txt`
with open("z_out.txt", "w") as f:
 f.writelines(output_lines)

alcoholic alert
alert algebra
algebra alibi
alibi blablabla

share|improve this answer

edited Mar 27 at 3:39

answered Mar 27 at 3:00

hygullhygull

4,77322 gold badges1717 silver badges3232 bronze badges

answered Mar 27 at 3:00

hygullhygull

4,77322 gold badges1717 silver badges3232 bronze badges

answered Mar 27 at 3:00

hygullhygull

4,77322 gold badges1717 silver badges3232 bronze badges

1

Here's a possibility using list comprehension, giving you the output in the form of a list.

with open('z.txt','r') as f: 
 wordlist = f.read().split('n')

>>>wordlist
['alcoholic', 'alert', 'algebra', 'alibi', 'blablabla']

combineduo = [' '.join([x.strip(), y.strip()]) for x,y in zip(wordlist[:-1],wordlist[1:])]

>>>combineduo
['alcoholic alert', 'alert algebra', 'algebra alibi', 'alibi blablabla']

share|improve this answer

answered Mar 27 at 3:19

kerweikerwei

1,53411 gold badge99 silver badges2020 bronze badges

add a comment | 

1

Here's a possibility using list comprehension, giving you the output in the form of a list.

with open('z.txt','r') as f: 
 wordlist = f.read().split('n')

>>>wordlist
['alcoholic', 'alert', 'algebra', 'alibi', 'blablabla']

combineduo = [' '.join([x.strip(), y.strip()]) for x,y in zip(wordlist[:-1],wordlist[1:])]

>>>combineduo
['alcoholic alert', 'alert algebra', 'algebra alibi', 'alibi blablabla']

share|improve this answer

answered Mar 27 at 3:19

kerweikerwei

1,53411 gold badge99 silver badges2020 bronze badges

add a comment | 

Here's a possibility using list comprehension, giving you the output in the form of a list.

with open('z.txt','r') as f: 
 wordlist = f.read().split('n')

>>>wordlist
['alcoholic', 'alert', 'algebra', 'alibi', 'blablabla']

combineduo = [' '.join([x.strip(), y.strip()]) for x,y in zip(wordlist[:-1],wordlist[1:])]

>>>combineduo
['alcoholic alert', 'alert algebra', 'algebra alibi', 'alibi blablabla']

share|improve this answer

answered Mar 27 at 3:19

kerweikerwei

1,53411 gold badge99 silver badges2020 bronze badges

with open('z.txt','r') as f: 
 wordlist = f.read().split('n')

>>>wordlist
['alcoholic', 'alert', 'algebra', 'alibi', 'blablabla']

combineduo = [' '.join([x.strip(), y.strip()]) for x,y in zip(wordlist[:-1],wordlist[1:])]

>>>combineduo
['alcoholic alert', 'alert algebra', 'algebra alibi', 'alibi blablabla']

share|improve this answer

answered Mar 27 at 3:19

kerweikerwei

1,53411 gold badge99 silver badges2020 bronze badges

answered Mar 27 at 3:19

kerweikerwei

1,53411 gold badge99 silver badges2020 bronze badges

answered Mar 27 at 3:19

kerweikerwei

1,53411 gold badge99 silver badges2020 bronze badges