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Python Course Materials/Week8/DKIFER_Week8Lab_pg331_Excercise9.py

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+# Write an automated censor program that reads in the text from a file and creates a new file where all of the four letter words have been replaced by "****". You can ignore punctuation and you may assume that no words in the file are split across multiple lines. 
+
+import os
+
+def Censor_Words(input_file, output_file):
+    print(f"Censoring words in file: , {input_file} and writing them to {output_file}\n")
+    #check if output file exists and if not then create it 
+    if not os.path.exists(output_file):
+        open(output_file, 'w').close()
+    else:
+        print(f"{output_file} already exists. Overwriting it.\n")
+    try: # try to open the file and write to the output file
+        with open(input_file, 'r') as f: # open the file, using r to read read it
+            text = f.read() # read the file
+            words = text.split() # split up the words
+            for i in range(len(words)): # loop through the words. Len(words) gives the number of words in the list
+                if len(words[i]) == 4: # if the word is 4 characters, then replace it with ****
+                    print(f"Word {words[i]} censored.\n") #output the word that was censored for troubleshooting.    
+                    words[i] = "****"
+                             
+            with open(output_file, 'w') as f: # open the output file, using w to write to it
+                f.write(" ".join(words))
+        print("Censoring document complete. Results found in output.txt\n")
+    except FileNotFoundError:
+        print("File wasn't found.")
+    except:
+        print("An error occurred.")
+
+def __main__():
+    script_directory = os.path.dirname(os.path.abspath(__file__)) # get the directory of the script
+    input_file = os.path.join(script_directory, "input.txt") #had to use os.path.join to get the correct path. Wasn't working with just the file name
+    output_file = os.path.join(script_directory, "output.txt") #   had to use the os.path.join to get the correct path dynamically. Wasn't working with just the file name 
+    print(f"Input file: {input_file}\n, Output file: {output_file}\n") # troubleshooting the file name issues. Show the input and output in console.
+    Censor_Words(input_file, output_file) # call the function to start censoring
+
+
+if __name__ == "__main__":
+    __main__() # call the main function and get things started.
+