How To Read A File Word By Word In Python
In this Python tutorial, we will learn, how to read a file line past line in Python with a few examples. Autonomously from Python read a file line by line nosotros will also comprehend the beneath topics:
- Python read file line by line
- Python read file line by line into array
- Python read file line by line into a dictionary
- Python read file line by line and search cord
- Python read file line by line without a newline
- Python read file line by line into a list
- Python read file line by line into a set
- Python read file line by line and write to another file
- Read file line by line for loop python
Python read file line by line
At present, nosotros tin can see how to read file line by line in python.
- In this example, I have taken a line every bit ["Welcome\north","to\n","Pythonguides\n"] , and to open up the file , I have used file = open('line.txt', 'w') and 'due west' style to write the lines. Here line.txt is the name of the file.
- To read the lines, I have used Lines = file.readlines(), for loop, is used.
Instance:
Line = ["Welcome\n","to\north","Pythonguides\n"] file = open('line.txt', 'w') file.writelines(Line) file.shut() file = open('line.txt', 'r') Lines = file.readlines() for line in Lines: impress(line) To get output, I have used print(line). In the below screenshot, nosotros tin can see the line from the file as the output.
This is how we tin read file line by line in Python.
Check out Python binary tree implementation and How to read video frames in Python.
Python read file line by line into array
Now, we can see how to read file line by line into array in python.
- In this example, I take defined a role as fruits and an argument fruitsname is passed.
- An empty array is defined and the statement is opened as f and to read the line. The for line in f is used and to append the line into the array, array.append is used.
- The fruits file is passed as the parameter in the function.
Example:
def fruits(fruitsname): assortment = [] with open(fruitsname) as f: for line in f: assortment.append(line) print(assortment) fruits('fruits.txt') The below screenshot shows the content of the file
The line which is present in the file is appended into the array as the output. Yous can refer to the below screenshot for the output.
This code, we tin utilise to read file line past line into assortment in Python.
Python read file line by line into dictionary
At present, we can see how to read file line past line into dictionary into python.
- In this example, An empty dictionary is alleged and the file lexicon.txt is opened.
- The for line in file is used to read the file line by line and fundamental, value is assigned line.dissever() is used to split the listing.
- To assigned the key and value, I have used dictionary[key] = value.
- To print the dictionary, I accept used print(lexicon).
Case:
dictionary = {} file = open("lexicon.txt") for line in file: key, value = line.split() dictionary[key] = value print(dictionary) The below screenshot prove the content of the file.
Here, we tin see the output as the lexicon is printed by reading the file. You can refer to the beneath screenshot for the output.
This is how to read file line past line into dictionary in Python.
You may similar to read, Python program to find sum of north numbers and How to add together two numbers in Python.
Python read file line by line and search string
Here, we can see how to read file line past line and search string in python.
- In this example, I have defined a role as a file and passed the arguments filename and search.
- To search the string, I have opened the file cord.txt and to read the file, I have used for line in read to search the string.
- If the cord is in line render True and return False if the word 'Hello' is present in the file it prints string present in the file else the string non present in the file.
Example:
def file(file_name, search): with open up("cord.txt", 'r') as read: for line in read: if search in line: return Truthful return False if file('string.txt', 'Hi'): impress('string present in the file') else: print('String not present in the file') The below screenshot show the content of the file.
As the string "Hello" is nowadays in the file, we tin see the output as String nowadays in the file. Y'all can refer to the below screenshot for the output.
This is how to read file line by line and search cord in Python.
Python read file line by line without a newline
Now, we can see how to read file line by line without a newline in python.
- In this example, I have opened the file cord.txt and used "r" manner to read the file.
- To read the file line by line without a newline, I accept used .replace('\n').
- To get the output print(cord) is used.
Example:
file=open("string.txt","r") string=file.read().supercede('\n','') print(string) The beneath screenshot bear witness the content of the file.
The below screenshot evidence that the file is read without newline every bit the output. The below screenshot shows the output.
The above code, nosotros can use to read file line past line without a newline in Python.
Python read file line by line into a list
Let'due south come across how to read file line past line into a list in python.
- In this instance, I take opened a file number.txt and 'r' mode to read the file every bit f, and an empty list is defined as list = [ ] and to read line by line for line in f is used.
- To append the line from the file into the list, I have used lines.append(line.strip()) the line.strip is used.
- The line.strip() is used to copy the cord and remove the characters. To get the output, impress(lines) is used.
Case:
with open ("number.txt",'r' ) as f: list = [] for line in f: lines.append(line.strip()) print(lines) The below screenshot bear witness the content of the file number.txt.
In the below screenshot, we can that the content from the file number.txt is appended in the list equally the output.
The in a higher place code, nosotros can use to read file line by line into a listing in Python.
Python read file line by line into a set
Now, we tin encounter how to read file line by line into a set in python.
- In this instance, a gear up is used to read the file into a set the content from the file chocolate.txt is read by using .read() and .divide() is used to divide the string.
- To go the output, I have used impress(chocolate).
Example:
chocolate = prepare(open('chocolate.txt').read().split()) print(chocolate) The beneath screenshot show the content of the file.
The content from the file chocolate.txt is appended into the ready as the output. You can refer to the below screenshot for the output.
This is how to read file line by line into a set in Python.
Python read file line by line and write to another file
Hither, we can meet how to read file line by line and write to another file in python.
- In this example, I have opened the file chocolate.txt as f1.
- To write the content into some other file, I have opened another file as newfile.txt and f.write is used to write the file, and f.read is used to read the file.
- The .strip() is used to remove the character from the left and correct of the argument.
Case:
with open("chocolate.txt") as f1,\ open("newfile.txt", "due west") as f: f.write(f1.read().strip()) The below screenshot shows the content of the file chocolate.txt.
In the below screenshot, we can see that the content from the file chocolate.txt into newfile.txt.
This is how to read file line by line and write to another file in Python.
Read file line by line for loop python
At present, we tin come across how to Read file line by line for loop in python.
In this case, I have opened a file python.txt equally f and for loop is used as for line in f to read the line of the file.
Example:
with open('python.txt') as f: for line in f: print(line) The below screenshot shows the content of the file
All the lines from the file python.txt are read as the output. Y'all tin can refer to the below screenshot for the output.
The above code, we can employ to read file line by line for loop in Python.
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In this tutorial, we have learned about Python read a file line by line instance, and likewise nosotros have covered these topics:
- Python read file line by line
- Python read file line past line into array
- Python read file line by line into a lexicon
- Python read file line by line and search string
- Python read file line past line without a newline
- Python read file line past line into a list
- Python read file line by line into a set
- Python read file line by line and write to some other file
- Read file line by line for loop python
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