File handling in Python

DIRECTORY.md

@@ -424,6 +424,9 @@
   * [Resonant Frequency](electronics/resonant_frequency.py)
   * [Wheatstone Bridge](electronics/wheatstone_bridge.py)
 
+## File Handling
+  * [Read File](file_handling/read_file.py)
+
 ## File Transfer
   * [Receive File](file_transfer/receive_file.py)
   * [Send File](file_transfer/send_file.py)
@@ -1314,6 +1317,7 @@
   * [Prefix Function](strings/prefix_function.py)
   * [Rabin Karp](strings/rabin_karp.py)
   * [Remove Duplicate](strings/remove_duplicate.py)
+  * [Replace](strings/replace.py)
   * [Reverse Letters](strings/reverse_letters.py)
   * [Reverse Words](strings/reverse_words.py)
   * [Snake Case To Camel Pascal Case](strings/snake_case_to_camel_pascal_case.py)

file_handling/read_file.py

@@ -0,0 +1,18 @@
+# Relative path
+def read_file():
+    fp = open(r"test_file.txt", "r")
+    # read file
+    text = fp.read()
+    # Closing the file after reading
+    fp.close()
+    """
+  >>> read_file()
+  >>> print("Hello World!")
+  """
+    return text
+
+
+if __name__ == __main__:
+    from doctest import testmod
+
+    testmod()

file_handling/test_file.txt

@@ -0,0 +1 @@
+Hello World!

strings/replace.py

@@ -0,0 +1,25 @@
+def string_replace(
+    text: str, input_string: str, replace_with_string: str, occurrence: int
+) -> str:
+    """
+    https://docs.python.org/3/library/stdtypes.html#str.replace
+    The replace() method replaces a specified string with another specified string.
+    The occurrence parameter can be skipped in order to consider all text.
+    Note: input and replace_with strings are case-sensitive.
+    >>> text = "One Two Two Three Four Five"
+    >>> string_val = string_replace(text, "Two", "Seven", 1)
+    >>> print(string_val)
+    One Seven Two Three Four Five
+
+    >>> text = "In the morning, the cat is running behind the mouse."
+    >>> string_val = string_replace(text, "the", "a", 10)
+    >>> print(string_val)
+    In a morning, a cat is running behind a mouse.
+    """
+    return text.replace(input_string, replace_with_string, occurrence)
+
+
+if __name__ == "__main__":
+    from doctest import testmod
+
+    testmod()