diff --git a/.project b/.project
new file mode 100644
index 0000000..2c3e8ad
--- /dev/null
+++ b/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>ChaChaSimpleINI</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.python.pydev.PyDevBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.python.pydev.pythonNature</nature>
+	</natures>
+</projectDescription>
diff --git a/.pydevproject b/.pydevproject
new file mode 100644
index 0000000..86dde05
--- /dev/null
+++ b/.pydevproject
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?eclipse-pydev version="1.0"?><pydev_project>
+    <pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
+    <pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python interpreter</pydev_property>
+    <pydev_pathproperty name="org.python.pydev.PROJECT_SOURCE_PATH">
+        <path>/${PROJECT_DIR_NAME}/ChaChaSimpleINI</path>
+    </pydev_pathproperty>
+</pydev_project>
diff --git a/ChaChaSimpleINI/ChaChaSimpleINI/__init__.py b/ChaChaSimpleINI/ChaChaSimpleINI/__init__.py
new file mode 100644
index 0000000..8e50190
--- /dev/null
+++ b/ChaChaSimpleINI/ChaChaSimpleINI/__init__.py
@@ -0,0 +1,6 @@
+from .core import   ChaChaINI_KeyNotFoundException, \
+                    ChaChaINI_SectionNotFoundException
+                    
+from .core import   ChaChaSimpleINI_key, \
+                    ChaChaSimpleINI_section, \
+                    ChaChaSimpleINI
\ No newline at end of file
diff --git a/ChaChaSimpleINI/ChaChaSimpleINI/core.py b/ChaChaSimpleINI/ChaChaSimpleINI/core.py
new file mode 100644
index 0000000..d65fbf2
--- /dev/null
+++ b/ChaChaSimpleINI/ChaChaSimpleINI/core.py
@@ -0,0 +1,189 @@
+import re
+from typing import Union
+
+class ChaChaINI_KeyNotFoundException(RuntimeError):
+    pass
+class ChaChaINI_SectionNotFoundException(RuntimeError):
+    pass
+    
+class ChaChaSimpleINI_key:
+    def __init__(self,name:str,value:str):
+        self.name   = name
+        self.value  = value
+        
+    def format(self,bBeautify:bool = False) -> str:
+        if bBeautify:
+            return "{0} = {1}".format(self.name,self.value)
+        else:
+            return "{0}={1}".format(self.name,self.value)
+    
+class ChaChaSimpleINI_section:
+    def __init__(self,name:str):
+        self.name = name
+        self.ar_keys=[]
+        
+    def format(self) -> str:
+        return "[{0}]".format(self.name)
+        
+    def formatAll(self,bBeautify:bool = False) -> str:
+        result = ""
+        result = self.format() + "\n"
+        for key in self.ar_keys:
+            result = result + key.format(bBeautify) + "\n"
+        return result
+        
+    def appendKey(self,name,value) -> None:
+        key = ChaChaSimpleINI_key(name,value)
+        self.ar_keys.append(key)
+        #print("add key {0} in {1}".format(name,self.name))
+        return key
+        
+    def getAllKeyNames(self)->list[str]:
+        result=[]
+        for key in self.ar_keys:
+            result.append(key.name)
+        return result
+        
+    def getKey(self,name:str) -> Union[ChaChaSimpleINI_key,list[ChaChaSimpleINI_key]]:
+        result = None
+        for key in self.ar_keys:
+            if name == key.name:
+                if result is None:
+                    result = key
+                elif isinstance(result,ChaChaSimpleINI_key):
+                    result = [result,key]
+                else: #array
+                    result.append(key)
+        if result is None:
+            raise ChaChaINI_KeyNotFoundException()
+        return result
+        
+    def getKeyValue(self,name:str) -> Union[str,list[str]]:
+        keys = self.getKey(name)
+        if isinstance(keys,ChaChaSimpleINI_key):
+            return keys.value
+        else: #array
+            result = []
+            for key in keys:
+                result.append(key.value)
+            return result
+        
+    def setKeyValue(self,name:str,value:str) -> Union[str,list[str]]:
+        try :
+            keys = self.getKey(name)
+        except KeyNotFoundException:
+            keys = self.appendKey(name,'')
+            
+        if isinstance(keys,ChaChaSimpleINI_key):
+            keys.value = value
+        else: #array: in this case we set value of the last key
+            keys[-1].value = value
+        
+class ChaChaSimpleINI:
+    def __init__(self,filepath:str):
+        self.filepath = filepath
+        self.ar_sections=[]
+        with open(filepath) as file:
+            for _line in file:
+                line = _line.rstrip()
+                if   result := re.search(r'^\s*$',line):
+                    print("find empty line, ignoring this line")
+                elif result := re.search(r'^\s*;',line):
+                    print("find comment, ignoring this line")
+                elif result := re.search(r'^\s*\[(?P<section_name>.*)\]\s*$',line):
+                    print("find section")
+                    self.addSection(result.group('section_name').strip()) 
+                elif result := re.search(r'^\s*(?P<key_name>[^=]*)=(?P<key_value>.*)',line):
+                    print("find key")
+                    self.ar_sections[-1].appendKey(result.group('key_name').strip(),result.group('key_value').strip())
+                else:
+                    print("find unknown, ignoring this line")
+        
+    def formatAll(self,bBeautify:bool = False) -> str:
+        result = ""
+        for section in self.ar_sections:
+            result = result + section.formatAll(bBeautify)
+            if bBeautify:
+                result = result + "\n"
+        return result
+        
+    def addSection(self,name:str) -> None:
+        section = ChaChaSimpleINI_section(name)
+        self.ar_sections.append(section)
+        return section
+        
+    def writeFile(self,bBeautify:bool = False) -> None:
+        with open(self.filepath,'w') as file:
+            file.write(self.formatAll(bBeautify))
+        
+    def getAllSectionNames(self) -> list[str]:
+        result=[]
+        for section in self.ar_sections:
+            result.append(section.name)
+        return result
+        
+    def getSection(self,name:str) -> Union[ChaChaSimpleINI_section,list[ChaChaSimpleINI_section]]:
+        result = None
+        for section in self.ar_sections:
+            if name == section.name:
+                if result is None:
+                    result = section
+                elif isinstance(result,ChaChaSimpleINI_section):
+                    result = [result,section]
+                else:
+                    result.append(section)
+        if result is None:
+            raise ChaChaINI_SectionNotFoundException()
+        return result
+        
+    def getAllKeyNames(self,sectionName:str)->list[str]:
+        sections = self.getSection(sectionName)
+        if isinstance(sections,ChaChaSimpleINI_section):
+            return sections.getAllKeyNames()
+        else:
+            result = []
+            for section in sections:
+                result.extend(section.getAllKeyNames())
+        return result
+        
+    def getKey(self,sectionName:str,keyName:str)->Union[str,list[str]]:
+        sections = self.getSection(sectionName)
+        if isinstance(sections,ChaChaSimpleINI_section):
+            return sections.getKey(keyName)
+        else:
+            result = []
+            for section in sections:
+                try:
+                    result.extend(section.getKey(keyName))
+                except KeyNotFoundException:
+                    pass
+            if not result:
+                raise ChaChaINI_KeyNotFoundException()
+        return result
+        
+    def getKeyValue(self,sectionName:str,keyName:str)->Union[str,list[str]]:
+        sections = self.getSection(sectionName)
+        if isinstance(sections,ChaChaSimpleINI_section):
+            return sections.getKeyValue(keyName)
+        else:
+            result = []
+            for section in sections:
+                try:
+                    result.extend(section.getKeyValue(keyName))
+                except ChaChaINI_KeyNotFoundException:
+                    pass
+            if not result:
+                raise ChaChaINI_KeyNotFoundException()
+        return result
+        
+    def setKeyValue(self,sectionName:str,keyName:str,keyValue:str)->Union[str,list[str]]:
+        try:
+            sections = self.getSection(sectionName)
+        except ChaChaINI_SectionNotFoundException:
+            sections = self.addSection(sectionName)
+        
+        if isinstance(sections,ChaChaSimpleINI_section):
+            sections.setKeyValue(keyName,keyValue)
+        else: #array: in this case we set value of the last section
+            sections[-1].setKeyValue(keyName,keyValue)
+        
\ No newline at end of file
diff --git a/ChaChaSimpleINI/setup.py b/ChaChaSimpleINI/setup.py
new file mode 100644
index 0000000..e69de29