python search string in file
As you yourself said, just open the file and check if it is in it. with open('myfile.txt') as myfile: if 'String' in myfile.read(): print('Blahblah').,跳到 Searching text for a substring. - Let's use the find() method to search for the letter "e" in the first line of our text file, which is stored in the list ... , It's just because you forgot to strip the new line char at the end of each line. ... I'd rather use the in keyword to look for a string in a line. Here I'm ...,NOTE: in python 3, mmaps behave like bytearray objects rather than strings, so the subsequence you look for with find() has to be a bytes object rather than a ... ,txt file containing a substring. Args: fname (str): File name to open. substr (str): Substring to look for in lines. , first collect the existing ones in a set and then look for the missing ones. my_regex = re.compile('.*file.*(-d+)-.txt.*') present_ones = set() for line ..., You could do this with a for loop as below. The issue with your code is it does not know what x is. You can define it inside of the loop to make x ..., Your function is testing only the first line, so it return True only if the first line contain your string. It should be : def search_string(filename ..., matched_lines = [line for line in my_string.split('-n') if "substring" in line] ... like grep token on unix and keyword 'in' or .contains in python and C#, To check for an exact match you would use num == line . ... fp): return [line for line in fp if string in line] def lines_that_start_with(string, fp): return ...
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 python search string in file 相關參考資料
Check if a string is in a file with Python - Stack Overflow
As you yourself said, just open the file and check if it is in it. with open('myfile.txt') as myfile: if 'String' in myfile.read(): print('Blahblah'). https://stackoverflow.com How to Extract Specific Portions of a Text File Using Python
跳到 Searching text for a substring. - Let's use the find() method to search for the letter "e" in the first line of our text file, which is stored in the list ... https://www.computerhope.com How to find a specific string in a .txt file Python - Stack Overflow
It's just because you forgot to strip the new line char at the end of each line. ... I'd rather use the in keyword to look for a string in a line. Here I'm ... https://stackoverflow.com How to search for a string in text files? - Stack Overflow
NOTE: in python 3, mmaps behave like bytearray objects rather than strings, so the subsequence you look for with find() has to be a bytes object rather than a ... https://stackoverflow.com How to write a python script that will find a specific string in a ...
txt file containing a substring. Args: fname (str): File name to open. substr (str): Substring to look for in lines. https://www.quora.com Python - How to search a string in a large file - Stack Overflow
first collect the existing ones in a set and then look for the missing ones. my_regex = re.compile('.*file.*(-d+)-.txt.*') present_ones = set() for line ... https://stackoverflow.com Python - Search Text File For Any String In a List - Stack Overflow
You could do this with a for loop as below. The issue with your code is it does not know what x is. You can define it inside of the loop to make x ... https://stackoverflow.com Python: searching for a string on a file - Stack Overflow
Your function is testing only the first line, so it return True only if the first line contain your string. It should be : def search_string(filename ... https://stackoverflow.com Search and get a line in Python - Stack Overflow
matched_lines = [line for line in my_string.split('-n') if "substring" in line] ... like grep token on unix and keyword 'in' or .contains in python and C# https://stackoverflow.com Search File And Find Exact Match And Print Line? - Stack Overflow
To check for an exact match you would use num == line . ... fp): return [line for line in fp if string in line] def lines_that_start_with(string, fp): return ... https://stackoverflow.com |