Python count string lines

Python python count how many line string

If you need to count the lines from to , you need a little magic: Solution 2: I assume you want to find the number of lines in a block where each block starts with a line that contains ‘Rank’ e.g., there are 3 blocks in your sample: 1st has 4 lines, 2nd has 4 lines, 3rd has 1 line: If all blocks have the same number of lines or you just want to find number of lines in the first block that starts with : Solution 3: counting jump between first two occurrences: Solution 1: I believe this is what you’re looking to achieve: Output: Solution 2: If you really want to implement this by yourself and count the words, then it would be great to use : Output: Solution 3: Maybe you can use the collections package to do the job:- Hope this helps!! A very terse approach might be: Expanding that out into a bunch of separate commands might look like: Solution 1: Don’t use when a simple generator expression counting the lines with is enough: is enough to test if the string is not present in a string.

Count lines containing *both* of two strings, from a larger/multiline string in Python

You can’t use str.count() here; it’s not built for your purpose, since it doesn’t have any concept of «lines». That said, given a string, you can break it down into a list of individual lines by splitting on ‘\n’ , the newline character.

A very terse approach might be:

count = sum((1 if ('Romeo' in l and 'Juliet' in l) else 0) for l in gbdata.split('\n')) 

Expanding that out into a bunch of separate commands might look like:

count = 0 for line in gbdata.split('\n'): if 'Romeo' in line and 'Juliet' in line: count += 1 

Python regex to count number of lines in a string which has only one, The above code works by adding up the number of times the string max is equal to the current line in string . The sum will be the number of

Counting jump(no of lines) between first two ‘String’ occurrences in a file

Don’t use .readlines() when a simple generator expression counting the lines with Rank is enough:

count = sum(1 for l in open(filename) if 'Rank' not in l) 

‘Rank’ not in l is enough to test if the string ‘Rank’ is not present in a string. Looping over the open file is looping over all the lines. The sum() function will add up all the 1 s, which are generated for each line not containing Rank , giving you a count of lines without Rank in them.

If you need to count the lines from Rank to Rank , you need a little itertools.takewhile magic:

import itertools with open(filename) as f: # skip until we reach `Rank`: itertools.takewhile(lambda l: 'Rank' not in l, f) # takewhile will have read a line with `Rank` now # count the lines *without* `Rank` between them count = sum(1 for l in itertools.takewhile(lambda l: 'Rank' not in l, f) count += 1 # we skipped at least one `Rank` line. 

I assume you want to find the number of lines in a block where each block starts with a line that contains ‘Rank’ e.g., there are 3 blocks in your sample: 1st has 4 lines, 2nd has 4 lines, 3rd has 1 line:

from itertools import groupby def block_start(line, start=[None]): if 'Rank' in line: start[0] = not start[0] return start[0] with open(filename) as file: block_sizes = [sum(1 for line in block) # find number of lines in a block for _, block in groupby(file, key=block_start)] # group print(block_sizes) # -> [4, 4, 1] 

If all blocks have the same number of lines or you just want to find number of lines in the first block that starts with ‘Rank’ :

count = None with open(filename) as file: for line in file: if 'Rank' in line: if count is None: # found the start of the 1st block count = 1 else: # found the start of the 2nd block break elif count is not None: # inside the 1st block count += 1 print(count) # -> 4 

counting jump between first two ‘Rank’ occurrences:

def find_jumps(filename): first = True count = 0 with open(filename) as f: for line in f: if 'Rank' in line: if first: count = 0 #set this to 1 if you want to include one of the 'Rank' lines. first = False else: return count else: count += 1 

How do I get the count of string occurrence in python?, A simple way to include a count in your current code is to use collections.defaultdict() and simple += the count of each matched string.

How to count instances of words in multiple lines?

I believe this is what you’re looking to achieve:

dic = <> line = input("Enter line: ") while line: for word in line.split(" "): if word not in dic: dic[word] = 1 else: dic[word] +=1 line = input("Enter line: ") for word in sorted(dic): print(word, dic[word]) 

Enter line: hello world Enter line: world Enter line: hello 1 world 2 

If you really want to implement this by yourself and count the words, then it would be great to use defaultdict :

from collections import defaultdict sentence = '''this is a test for which is witch and which because of which''' words = sentence.split() d = defaultdict(int) for word in words: d[word] = d[word]+ 1 print(d) 

Maybe you can use the collections package to do the job:-

from collections import Counter line = input("Enter line: ") words = line.split(" ") word_count = dict(Counter(words)) print(word_count) 

Enter line: hi how are you are you fine

How to check how many line start with digit, Solution is: def digit_leading_lines(text): lines = text.splitlines() count = 0 for line in lines: if line and line[0].isdigit(): count += 1

Python3 Counting words on multiple lines? [duplicate]

Your script is only reading the first line because it returns after the first iteration in your loop. To fix this simply move the return outside of the loop.

def count_word(fname): num_words = 0 with open(fname, 'r') as f: for line in f: words = line.split() num_words += len(words) return num_words 

Python Program to Get Line Count of a File, Using a for loop, the number of lines of a file can be counted. Open the file in read-only mode. Using a for loop, iterate through the object f . In each

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Using Python to Count Number of Lines in String

You can also use the split() function from the regular expression module re.

import re string = "This is a\nstring with\nnewline in it" count = len(re.split("\n", string)) print(re.split("\n", string)) print(count) #Output: ["This is a", "string with", "newline in it"] 3

When working with strings and text in Python, the ability to manipulate and create new objects from strings can be useful.

One such situation is if you have newline characters in your string and want to know how many lines your string contains.

You can find out how many lines your string contains by splitting the string by the newline character and using the len() function to get the count of items returned by split().

Below is a simple example showing you how to get the number of lines in a string using Python.

string = "This is a\nstring with\nnewline in it" count = len(string.split("\n")) print(string.split("\n")) print(count) #Output: ["This is a", "string with", "newline in it"] 3

Hopefully this article has been useful for you to learn how to get the number of lines in a string using Python.

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7 examples of ‘python count lines in string’ in Python

Every line of ‘python count lines in string’ code snippets is scanned for vulnerabilities by our powerful machine learning engine that combs millions of open source libraries, ensuring your Python code is secure.

All examples are scanned by Snyk Code

95
def count_lines(lines):
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"""Get line counting stats"""
97
 
98
 
s = CodeStats()
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s.total_lines = len(lines)
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ne = 0
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for line in lines:
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line = line.strip()
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if len(line) > 0:
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ne = ne + 1
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s.total_nonempty_lines = ne
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return s

16
def lines_count(message):
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return 1 + sum([len(line)/50 for line in message.split('\n')])

90
def _count_newlines(self, string):
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newline_count = 0
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for char in string:
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if char == "\n":
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newline_count += 1
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return newline_count

63
def count_lines(file):
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with open(os.path.join(os.environ['GOPATH'], 'src', file)) as inf:
65
 
return len(inf.readlines())

106
def count_lines3(self, file_name):
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with open(file_name) as f:
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return len(f.readlines())

 )
414
@pytest.mark.parametrize(
 
415
 
"code_string,expected_count",
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[
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('# hello world \n""" hello """', 1),
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('# hello world\n""" hello """ \n """ hello """', 2),
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("# hello world hello ", 0),
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('""" hi """ \n """ hi again """', 2),
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('""" hi """ \n # whoa \n""" hi again """', 2),
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('# another function\ndef func(int arg):\n\t""" hi again """', 1),
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],
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425
def test_multiline_python_comments_mixed(code_string, expected_count):
426
 
"""Check that it can find multiline Python comments in mixtures."""
427
 
count_of_multiline_python_comments, _ = comments.count_multiline_python_comment(
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code_string
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)
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assert count_of_multiline_python_comments == expected_count

32
def line_count(file, connection=None):
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"""Get number of lines in a file."""
34
 
connection = connection or ssh.get_connection()
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result = connection.run('wc -l < '.format(file), output_format='plain')
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count = result.stdout.strip('\n')
37
 
return count

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