diff --git a/dist/js/shared/str.d.ts b/dist/js/shared/str.d.ts
index 1c52214..d3f91f9 100644
--- a/dist/js/shared/str.d.ts
+++ b/dist/js/shared/str.d.ts
@@ -7,7 +7,7 @@ export function removeNewLinesAndExtraSpaces(str: any): any;
 export function randomAlphanumeric(length: number): string;
 export function toFixedLocale(number: any, precision: any): any;
 /**
- * @summary Removes lines started with # character. Shebang (#!) is excluded.
+ * @summary Removes comments from a given source code text based on the specified programming language.
  * @param text {String} text to remove comments from.
  * @param language {String} programming language of the text.
  * @return {String}
diff --git a/dist/js/shared/str.js b/dist/js/shared/str.js
index f2075a6..fdf859a 100644
--- a/dist/js/shared/str.js
+++ b/dist/js/shared/str.js
@@ -40,16 +40,19 @@ function toFixedLocale(number, precision) {
 }
 exports.toFixedLocale = toFixedLocale;
 /**
- * @summary Removes lines started with # character. Shebang (#!) is excluded.
+ * @summary Removes comments from a given source code text based on the specified programming language.
  * @param text {String} text to remove comments from.
  * @param language {String} programming language of the text.
  * @return {String}
  */
 function removeCommentsFromSourceCode(text, language = "shell") {
+    var _a;
     const regexList = {
-        shell: /^(\s+)?#(?!!).*$/gm,
+        shell: /#(?!!).*$/gm,
+        fortran: /!.*$/gm,
+        python: /#.*$/gm,
     };
-    return text.replace(regexList[language], "");
+    return text.replace((_a = regexList[language]) !== null && _a !== void 0 ? _a : regexList.shell, "");
 }
 exports.removeCommentsFromSourceCode = removeCommentsFromSourceCode;
 /**
diff --git a/src/js/shared/str.js b/src/js/shared/str.js
index ab8c707..bff0800 100644
--- a/src/js/shared/str.js
+++ b/src/js/shared/str.js
@@ -37,16 +37,18 @@ export function toFixedLocale(number, precision) {
 }
 
 /**
- * @summary Removes lines started with # character. Shebang (#!) is excluded.
+ * @summary Removes comments from a given source code text based on the specified programming language.
  * @param text {String} text to remove comments from.
  * @param language {String} programming language of the text.
  * @return {String}
  */
 export function removeCommentsFromSourceCode(text, language = "shell") {
     const regexList = {
-        shell: /^(\s+)?#(?!!).*$/gm,
+        shell: /#(?!!).*$/gm,
+        fortran: /!.*$/gm,
+        python: /#.*$/gm,
     };
-    return text.replace(regexList[language], "");
+    return text.replace(regexList[language] ?? regexList.shell, "");
 }
 
 /**
diff --git a/src/py/mat3ra/utils/string.py b/src/py/mat3ra/utils/string.py
index 4d75756..6bb4ccd 100644
--- a/src/py/mat3ra/utils/string.py
+++ b/src/py/mat3ra/utils/string.py
@@ -60,8 +60,14 @@ def snake_to_camel(snake_case_str: str) -> str:
 
 
 def remove_comments_from_source_code(text: str, language: str = "shell") -> str:
-    """Removes lines starting with # (except shebang)."""
-    return re.sub(r"^(\s+)?#(?!!).*$", "", text, flags=re.MULTILINE)
+    """Removes comments from source code based on the language.
+    TODO: consider preserving values enclosed in quotes
+    """
+    if language == "fortran":
+        return re.sub(r"!.*$", "", text, flags=re.MULTILINE)
+    if language == "python":
+        return re.sub(r"#.*$", "", text, flags=re.MULTILINE)
+    return re.sub(r"#(?!!).*$", "", text, flags=re.MULTILINE)
 
 
 def remove_empty_lines_from_string(text: str) -> str:
diff --git a/tests/py/unit/test_hash.py b/tests/py/unit/test_hash.py
index f8430cf..79661d4 100644
--- a/tests/py/unit/test_hash.py
+++ b/tests/py/unit/test_hash.py
@@ -39,16 +39,13 @@ class Model(BaseModel):
 
 
 def test_remove_timestampable_keys():
-    assert remove_timestampable_keys(
-        {"a": 1, "createdAt": "x", "updatedAt": "y", "removedAt": "z"}
-    ) == {"a": 1}
+    assert remove_timestampable_keys({"a": 1, "createdAt": "x", "updatedAt": "y", "removedAt": "z"}) == {"a": 1}
 
 
 def test_comment_and_empty_line_stripping_matches_js():
     text = "# comment\n\nx=1\n  # indented\n#!/bin/bash\n echo hi # inline\n"
     without_comments = remove_comments_from_source_code(text)
     assert "#!/" in without_comments  # shebang preserved
-    assert "echo hi # inline" in without_comments  # inline comment preserved
     assert "comment" not in without_comments
 
-    assert remove_empty_lines_from_string(without_comments) == "x=1\n#!/bin/bash\n echo hi # inline"
+    assert remove_empty_lines_from_string(without_comments) == "x=1\n#!/bin/bash\n echo hi"