def regex_search():
while True:
# prompt = 'Please provide the path to the folder which contains the .txt files that you wish to search in:\n'
# input_file_path = pyip.inputStr(prompt=prompt)
input_file_path = r'C:'
path = Path(input_file_path)
if path.is_dir():
break
else:
print(
'The given path either did not exist, or the path was not a folder.'
)
regex_string_prompt = 'Please provide a regular expression to use to search the .txt files\n'
regex_str = pyip.inputRegexStr(prompt=regex_string_prompt)
for textFilePathObj in path.glob('*.txt'):
file = open(textFilePathObj)
user_regex = re.compile(regex_str)
print(
f'The following lines in {textFilePathObj.name} matched the user provided regex of {regex_str} :'
)
for line in file.readlines():
if len(user_regex.findall(line)) > 0:
print(line)
def regexSearch():
# Ask user for his expression
expression = pyip.inputRegexStr("You want to search for: ")
# Set counter for number of occurances
expressionCounter = 0
# Store all .txt files in a list
directory = Path.cwd()
allFiles = (list(directory.glob("*.txt")))
for file in allFiles:
# Open all .txt files in the folder
currentFile = open(file, "r")
content = currentFile.read()
currentFile.close()
# Search user expression in the file
for match in re.finditer(expression, content):
expressionCounter += 1
print("The expression occured " + str(expressionCounter) + " times")
"""
A program that opens all .txt files in a folder
and searches for any line that matches a user-supplied
regular expression, and print to the screen.
"""
import os, glob, re, pyinputplus as pyip
current_folder = os.getcwd()
os.chdir(current_folder)
for file in glob.glob("*.txt"):
txt_obj = open(file, 'r')
txt = txt_obj.read()
user_supplied_regex_pattern = pyip.inputRegexStr(
prompt=f'For file {file}: input the search regex pattern: ')
regex = re.compile(user_supplied_regex_pattern)
search_result = regex.findall(txt)
# Print out result
if search_result is not None:
print(f"In file {file}: Found match(es): ")
for i in range(len(search_result)):
print(search_result[i] + " ")
else:
print("Not match found.")
txt_obj.close()
'''
Chapter 9 Reading and Writing Files
Regex Search
Write a program that opens all .txt files in a folder and searches for any
line that matches a user-supplied regular expression. The results should
be printed to the screen.
'''
from pathlib import Path
import pyinputplus as pyip
import re
# TODO: Bug in pyip??? inputRegexStr calls validateRegex instead of validateRegexStr
regex = pyip.inputRegexStr('Please input a regex: ')
pattern = re.compile(regex)
p = Path.cwd()
for txtFile in list(p.glob('*.txt')):
with open(txtFile) as curFile:
txtLines = curFile.readlines()
for txtLine in txtLines:
if (pattern.search(txtLine)):
print(txtLine)
import pyinputplus as pyip
from pathlib import Path
import re
def get_dir(count=0):
dir = pyip.inputFilepath(prompt='Enter a directory: ')
if (Path(dir).is_dir()):
return dir
else:
if (count > 5):
raise Exception("Too many tries")
get_dir(count + 1)
try:
dir = Path(get_dir())
except:
print('Too many tries')
exit()
regex = pyip.inputRegexStr(prompt='Enter the Regular Expression: ')
r = re.compile(regex)
files = list(dir.glob('*.txt'))
for file in files:
file_handle = open(file)
contents = file_handle.read()
print(r.findall(contents))
#!/usr/bin/env python3
# regex_search.py opens all .txt files in a folder and searches for any line that matches a user-supplied regular expression
# The results are printed to the screen
from pathlib import Path
import re, os
import pyinputplus as pyip
# Prompt user to input a path to be searched
file_path = input("Please enter a path to the folder you want to search:\n")
file_path_obj = Path(file_path) # Now we have the file path as a string and Path object
if Path.is_dir(file_path_obj) == True: # Check for valid directory
# Prompt user to input a regular expression
search_criteria = pyip.inputRegexStr(
prompt="Enter a regular expression to search for:\n"
)
text_files = os.listdir(file_path_obj) # List all files in dir
for text_file in text_files: # Loop through all files
try: # This will prevent the program from crashing if it cannot open one of the files
if text_file.endswith(".txt"): # Find the text files
contents = open(file_path_obj / text_file) # Open the file
list_of_lines = contents.readlines() # Make a list of all the lines
contents.close() # Close the text file
for (
line
) in list_of_lines: # Loop through every item in the list of lines
if (
search_criteria.search(line) != None
): # If the regex str finds a match
print(
from pathlib import Path
import re, os
import pyinputplus as pyip
#use glob to find txt files
p = Path(r'H:\The Folder of many text files')
p.glob('*.txt')
txtFiles = list(p.glob('*.txt'))
regExUserInput = pyip.inputRegexStr(
prompt='Please provide a regex to search for: ')
print(regExUserInput)
regExUser = regExUserInput
for fileN in txtFiles:
curFile = open(fileN)
curFileLines = list(curFile.readlines())
for line in range(len(curFileLines)):
if regExUser.search(curFileLines[line]) != None:
print('Match found in line ' + str(line) + '.\nIn file: ' +
os.path.basename(fileN) + '. \nLine: ' + curFileLines[line])
print()