diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 00000000..c825f3de
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,17 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyPackageRequirementsInspection" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ignoredPackages">
+        <value>
+          <list size="4">
+            <item index="0" class="java.lang.String" itemvalue="nose" />
+            <item index="1" class="java.lang.String" itemvalue="coverage" />
+            <item index="2" class="java.lang.String" itemvalue="termcolor" />
+            <item index="3" class="java.lang.String" itemvalue="pycodestyle" />
+          </list>
+        </value>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 00000000..94a25f7f
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/final_task/pycalc/__init__.py b/final_task/pycalc/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/final_task/pycalc/arithmetic.py b/final_task/pycalc/arithmetic.py
new file mode 100644
index 00000000..894f8ac6
--- /dev/null
+++ b/final_task/pycalc/arithmetic.py
@@ -0,0 +1,28 @@
+def subtraction(first_parameter, second_parameter):
+    return float(first_parameter) - float(second_parameter)
+
+
+def add(first_parameter, second_parameter):
+    return float(first_parameter) + float(second_parameter)
+
+
+def multiply(first_parameter, second_parameter):
+    return float(first_parameter) * float(second_parameter)
+
+
+def division(first_parameter, second_parameter):
+    if float(second_parameter) == 0:
+        return "Error: division by zero"
+    return float(first_parameter) / float(second_parameter)
+
+
+def power(first_parameter, second_parameter):
+    return float(first_parameter) ** float(second_parameter)
+
+
+def integer_division(first_parameter, second_parameter):
+    return float(first_parameter) // float(second_parameter)
+
+
+def modulo_division(first_parameter, second_parameter):
+    return float(first_parameter) % float(second_parameter)
diff --git a/final_task/pycalc/calculate_expression.py b/final_task/pycalc/calculate_expression.py
new file mode 100644
index 00000000..51b10bab
--- /dev/null
+++ b/final_task/pycalc/calculate_expression.py
@@ -0,0 +1,76 @@
+from pycalc import arithmetic
+import re
+
+
+def calculate(value):
+    """ It is a calculator. It can be use Math operation"""
+
+    if type(value) is not str:
+        print('It expected str got ' + type(value).__name__)
+
+    access_operators = ['+', '-', '*', '/', '//', '%', '**']
+    operators = re.findall(r'(\D*[^-.?\d?])', value)
+    digits = re.findall(r'(-*\.*\d+\.*\d*)', value)
+    if len(operators) == len(digits):
+        return "Error: you miss digits"
+    # check accessible operators
+    for operator in operators:
+        format_operator = operator.replace(' ', '')
+        if format_operator not in access_operators:
+            return "Error: not accessible operator '" + operator + "'"
+
+    counter = 0
+    result = 0
+    rest_operator = []
+    rest_digits = []
+    check = False
+    #     look for priority operators
+    for operator in operators:
+        format_operator = operator.replace(' ', '')
+
+        if format_operator == '/' or format_operator == '*' or format_operator == '//' or format_operator == '%' \
+                or format_operator == '**':
+            first_parameter = digits[counter]
+            if check:
+                first_parameter = rest_digits[-1]
+            if format_operator == '*':
+                result = arithmetic.multiply(first_parameter, digits[counter + 1])
+            elif format_operator == '/':
+                result = arithmetic.division(first_parameter, digits[counter + 1])
+                if type(result) is str:
+                    return result
+            elif format_operator == '//':
+                result = arithmetic.integer_division(first_parameter, digits[counter + 1])
+            elif format_operator == '%':
+                result = arithmetic.modulo_division(first_parameter, digits[counter + 1])
+            elif format_operator == '**':
+                result = arithmetic.power(first_parameter, digits[counter + 1])
+            if counter != 0:
+                rest_digits[-1] = result
+            else:
+                rest_digits.append(result)
+            check = True
+        else:
+            rest_operator.append(format_operator)
+            if counter == 0:
+                rest_digits.append(digits[counter])
+            rest_digits.append(digits[counter + 1])
+            check = False
+        counter += 1
+    if len(rest_operator) == 0:
+        # return value
+        if len(rest_digits) > 0:
+            return rest_digits[0]
+        else:
+            return value
+    else:
+        result = rest_digits[0]
+        counter2 = 0
+        for operator in rest_operator:
+            format_operator = operator.replace(' ', '')
+            if format_operator == '+':
+                result = arithmetic.add(result, rest_digits[counter2 + 1])
+            elif format_operator == '-':
+                result = arithmetic.subtraction(result, rest_digits[counter2 + 1])
+            counter2 += 1
+    return result
diff --git a/final_task/pycalc/calculate_math_parameters.py b/final_task/pycalc/calculate_math_parameters.py
new file mode 100644
index 00000000..608ac695
--- /dev/null
+++ b/final_task/pycalc/calculate_math_parameters.py
@@ -0,0 +1,82 @@
+import math
+import re
+import builtins
+from pycalc import calculate_expression, parse_brackets
+
+math_param = dir(math)
+additional_param = ['abs', 'round']
+all_parameters = math_param + additional_param
+
+
+def calc_math(name, value):
+    if value.find(',') == -1:
+        result = getattr(math, name)(
+            float(calculate_expression.calculate("".join(parse_brackets.parse_brackets(value)))))
+    else:
+        new_value = value.split(',')
+        result = getattr(math, name)(
+            float(calculate_expression.calculate("".join(parse_brackets.parse_brackets(new_value[0])))),
+            float(calculate_expression.calculate("".join(parse_brackets.parse_brackets(new_value[1])))))
+    return result
+
+
+def cal_additional_parameters(name, value):
+    return getattr(builtins, name)(float(eval(value)))
+
+
+# input: value -  string expression
+# output: string with calculated parameters
+def calculate_math_parameters(value):
+    value = value.replace('pi', str(math.pi)).replace('e', str(math.e))
+
+    math_parameters_from_expression = re.findall(r'(\w+)\s*\((.+)\)', value)
+    value = value.replace(' (', '(')
+
+    for items in math_parameters_from_expression:
+        new_item_name = items[0]
+        new_item_value = items[1]
+        if new_item_name not in all_parameters:
+            return 'Error: parameter "' + new_item_name + '" not found'
+        if items[0] in additional_param:
+            value = value.replace(items[0] + '(' + items[1] + ')',
+                                  str(cal_additional_parameters(new_item_name, new_item_value)))
+        else:
+            value = value.replace(items[0] + '(' + items[1] + ')', str(calc_math(new_item_name, new_item_value)))
+
+    return value
+
+
+def calc_math_parameter(value):
+
+    result = []
+    temp = ""
+    previous_element = ""
+    for item in value:
+        if re.match(r'[a-z]', item) and not re.match(r'[a-z]', previous_element):
+            if len(temp) > 0:
+                result.append(temp)
+                temp = ""
+        temp += item
+        if item == ')':
+            if len(temp) > 0:
+                if temp.find('(') != -1 and temp.find(')') != -1:
+                    count_left_bracket = re.findall(r'\(', temp)
+                    count_right_bracket = re.findall(r'\)', temp)
+                    if len(count_left_bracket) == len(count_right_bracket):
+                        if len(result) > 0:
+                            if result[-1].find('(') != -1:
+                                temp = result[-1] + str(calculate_math_parameters(temp))
+                                del result[-1]
+                            else:
+                                temp = str(calculate_math_parameters(temp))
+                                result.append(temp)
+                                temp = ""
+                        else:
+                            temp = str(calculate_math_parameters(temp))
+                            result.append(temp)
+                            temp = ""
+                else:
+                    result.append(temp)
+                    temp = ""
+        previous_element = item
+    return result
diff --git a/final_task/pycalc/parse_brackets.py b/final_task/pycalc/parse_brackets.py
new file mode 100644
index 00000000..2ad0a1d0
--- /dev/null
+++ b/final_task/pycalc/parse_brackets.py
@@ -0,0 +1,43 @@
+from pycalc import calculate_expression
+
+
+def parse_brackets(value):
+    result = []
+    temp = ""
+    is_calculate_expression = False
+    counter_value = 1
+    for item in value:
+        if item == '(' or item == ')':
+            if item == ')':
+                temp += item
+            if len(temp) > 0:
+                if temp.find('(') != -1 and temp.find(')') != -1:
+                    temp = temp.replace('(', '').replace(')', '')
+                    if len(result) > 0:
+                        if result[-1].find('(') != -1:
+                            temp = result[-1] + str(calculate_expression.calculate(temp))
+                            del result[-1]
+                        else:
+                            temp = str(calculate_expression.calculate(temp))
+                            result.append(temp)
+                            temp = ""
+                        is_calculate_expression = True
+                    else:
+                        temp = str(calculate_expression.calculate(temp))
+                        result.append(temp)
+                else:
+                    result.append(temp)
+                    temp = ""
+        else:
+            if len(value) == counter_value:
+                temp += item
+                result.append(temp)
+        temp += item
+        if item == ')' and not is_calculate_expression:
+            temp = ""
+        elif is_calculate_expression:
+            temp = temp[:-1]
+            is_calculate_expression = False
+        counter_value += 1
+    result = ''.join(result)
+    return result
diff --git a/final_task/pycalc/pycalc.py b/final_task/pycalc/pycalc.py
new file mode 100644
index 00000000..3e03fe3e
--- /dev/null
+++ b/final_task/pycalc/pycalc.py
@@ -0,0 +1,90 @@
+import argparse
+# import re
+from pycalc.pycalc_common import pcalc
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("EXPRESSION", type=str,  help="expression is the string you use here")
+    parser.add_argument("-m", "--use-modules", help="additional modules to use", action="store_true")
+    args = parser.parse_args()
+    if args.EXPRESSION:
+        print(pcalc(args.EXPRESSION))
+
+# print(pcalc('round(123.4567890)'))
+# print(type(pycalc_common.pcalc('-13')))
+# print(pycalc_common.pcalc('sin(e**log(e**e**sin(23.0),45.0) + cos(3.0+log10(e**-e)))'))
+# def pcalc(value):
+#     left_bracket = re.findall(r'\(', value)
+#     right_bracket = re.findall(r'\)', value)
+#     if len(left_bracket) != len(right_bracket):
+#         return 'error: missing bracket'
+#
+#     result_calculate = calculate_math_parameters.calculate_math_parameters(value)
+#
+#     print('result_calculate', result_calculate)
+#     if len(left_bracket) or len(right_bracket):
+#         result = parse_brackets.parse_brackets(result_calculate)
+#     else:
+#         result = eval(value)
+#     # print('eval_result:', eval(value))
+#     print('my_result:', result)
+#     return result
+
+
+# print(pcalc('sin(e**log(e**e**sin(23.0),45.0) + cos(3.0+log10(e**-e)))'))
+# print(sin(e**log(e**e**sin(23.0),45.0) + cos(3.0+log10(e**-e))))
+# print(calculate_expression.calculate('2.718281828459045**2.718281828459045**-0.8462204041751706'))
+# print(2.718281828459045**2.718281828459045**-0.8462204041751706)
+# print(2.718281828459045**-0.8462204041751706)
+# print(2.718281828459045**0.4290334443756452)
+# print(calculate_expression.calculate('5**2'))
+# print(calc_math('sin(-cos(-sin(3.0)-cos(-sin(-3.0*5.0)-sin(cos(log10(43.0))))+cos(sin(sin(34.0-2.0**2.0))))--cos(1.0)--cos(0.0)**3.0)'))
+# print(sin(-cos(-sin(3.0)-cos(-sin(-3.0*5.0)-sin(cos(log10(43.0))))+cos(sin(sin(34.0-2.0**2.0))))--cos(1.0)--cos(0.0)**3.0))
+# print(parse_brackets.parse_brackets('sin(e**log(e**e**sin(23.0),45.0) + cos(3.0+log10(e**-e)))'))
+# print(calculate_math_parameters.calculate_math_parameters('e + .3 + e '))
+# print(pcalc('7+((4+e) + log(8)*8)/cos((log(8) - 4)*2)'))
+#
+# def calculate(value):
+#     parameters_level_one = ['**']
+#     parameters_level_two = ['/', '*', '//', '%']
+#     parameters_level_three = ['+', '-']
+#     all_parameters = parameters_level_one + parameters_level_two + parameters_level_three
+#     # get_numbers = []
+#     # get_operators = []
+#     # temp = ""
+#     # prev_item = ""
+#     # value = value.replace(' ', '')
+#     # for item in value:
+#     #     if re.match(r'\d', item):
+#     #         get_number.append('item')
+#     #     if not re.match(r'\d]', item):
+#     operators = re.findall(r'(\D*[^.?\d?])', value)
+#     digits = re.findall(r'(\.*\d+\.*\d*)', value)
+#     counter = 0
+#     get_first_number = 0
+#     get_second_number = 0
+#     for item in operators:
+#         item = item.replace(' ', '')
+#         if len(digits) > counter:
+#             get_first_number = digits[counter]
+#         if len(digits) > counter + 1:
+#             get_second_number = digits[counter + 1]
+#         if item not in all_parameters:
+#             minus = re.findall('-', item)
+#
+#             elements = re.findall(r'[^-+\s]', item)
+#             print(len(minus) % 2)
+#             if len(minus) % 2 == 0:
+#                 get_second_number = '-' + get_second_number
+#             print('elements:', elements)
+#             if len(minus) == 0:
+#                 return "Error: not accessible operator '" + item + "'"
+#             get_parameter = re.findall(r'(\D*[^-+.?\d?])', value)
+#         counter += 1
+#         print(get_first_number)
+#         print(get_second_number)
+#         print('result:', float(get_first_number) * float(get_second_number))
+#
+#     print(operators)
+#     print(digits)
diff --git a/final_task/pycalc/pycalc_common.py b/final_task/pycalc/pycalc_common.py
new file mode 100644
index 00000000..6e62a9f7
--- /dev/null
+++ b/final_task/pycalc/pycalc_common.py
@@ -0,0 +1,19 @@
+import re
+from pycalc import calculate_math_parameters, calculate_expression, parse_brackets
+import math
+
+
+def pcalc(value):
+    value = value.replace('pi', str(math.pi)).replace('e', str(math.e))
+    left_bracket = re.findall(r'\(', value)
+    right_bracket = re.findall(r'\)', value)
+    if len(left_bracket) != len(right_bracket):
+        return 'error: missing bracket'
+
+    math_parameters_from_expression = re.findall(r'(\w+)\s*\((.+)\)', value)
+    result = value
+    if len(math_parameters_from_expression):
+        result = "".join(calculate_math_parameters.calc_math_parameter(value))
+    result = parse_brackets.parse_brackets(result)
+    result = calculate_expression.calculate(result)
+    return float(result)
diff --git a/final_task/setup.py b/final_task/setup.py
index e69de29b..7f9954c2 100644
--- a/final_task/setup.py
+++ b/final_task/setup.py
@@ -0,0 +1,24 @@
+import setuptools
+
+with open("README.md", "r") as fh:
+    long_description = fh.read()
+
+setuptools.setup(
+    name='pycalc',
+    version='1.31',
+
+    author="Maxim Tsyba",
+    author_email="maksimtsuba@gmail.com",
+    description="Calculator for EPAM",
+    long_description=long_description,
+    long_description_content_type="text/markdown",
+    url="https://github.com/javatechy/dokr",
+    packages=setuptools.find_packages(include=['pycalc']),
+    entry_points={'console_scripts': ['pycalc = pycalc.pycalc:main']},
+    py_modules=["pycalc"],
+    classifiers=[
+        "Programming Language :: Python :: 3.6",
+        "License :: OSI Approved :: MIT License",
+        "Operating System :: OS Independent",
+    ],
+)