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Top Answer
Answered Jul 20, 2009 · 4 votes
The ISO3166 currency codes (840 for U.S. Dollar, etc.) are not available in the .Net framework. All you can get from the RegionInfo class is the ISO4217 currency code (ISOCurrencyCode) (e.g. USD) and the CurrencySymbol (e.g. $).
You will, I'm afraid, have to download a list of the data and do the mapping yourself.
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Top Answer
Answered Oct 11, 2014 · 5 votes
The values of the types of accounts and amount types and the conditions in which they are allowed vary by each instance and variation of ISO-8583 but the standard format is the following:
The data element breakdown, occurring up to six times for a total length up to a total length of 120.
- Position Data 1-2
- Account Type (n 2) 3-4 (Must match DE003 format)
- Amount Type (An 2) 5-7 (See Table Below for a sample of SOME of the values)
- Currency Code (n 3) 8-20 (ISO-3166-1 Numeric, just like DE049-DE051)
- Amount (x + n 12)
The amount must not be greater than 999999999. "X" must be 0, C, or D. C or 0 = Credit amount and D = Debit Amount
Some of Amount Types others really vary by specification and though these are all numeric the Healthcare transactions are AlphaNumeric values in the VISA specification for example. Note that most of these are actually not commonly used in PIN or Debit transactions except 01, 02, 40-43, 57, 58, and 91.
ISO Code Description
- 00 Unknown
- 01 Account ledger balance
- 02 Account available balance
- 03 Amount owing
- 04 Amount due
- 05 Available Credit Line
- 06-10 Reserved for ISO use
- 11-15 Reserved for national use
- 16 Credit line
- 17 POS balance
- 18-19 Reserved for private use
- 20 Amount remaining this cycle
- 21-30 Reserved for ISO use
- 31-35 Reserved for national use
- 36-39 Reserved for private use
- 40 Amount Cash / Cash Back / Negotiable Item including Scrip
- 41 Amount goods and services
- 42 Amount Check (Deposit Only)
- 43 Amount Cash (Deposit Only)
- 42-50 Reserved for ISO use
- 51-55 Reserved for national use
- 56 Hold amount
- 57 Pre-Authorized Amount.
- 58 Authorized amount. (Used for Response Code DE039 = 10 Authorized fora Different Amount)
- 59 Floor Limit
- 60-79 Reserved for ISO use
- 80-89 Reserved for national use
- 91 Originally Requested Amount transaction in the currency amount of DE049.
- 92-93 Reserved for private use
Let me know if you need more explanation.
Christopher
2/5
Top Answer
Answered Sep 29, 2020 · 0 votes
Your issue is that you are reading the contents but not storing them again. But this code is yelling for some auxiliar functions so that everything stays clean. Lets start making some helper functions and solving the issue in the meanwhile.
We are requesting several integers from the user so lets create a function that handles this. It will return a special number (defaults to 0) in case we can't convert what the user provided to an integer.
def input_integer(request: str, *, error: int = 0) -> int: try: return int(input(request)) except ValueError: # If we can't convert to integer return error return error-
Note: if you are not used to the type annotations, they mean that the input_integer function expects a string argument (which is the message to request the integer) and a keyword integer argument that allows to configure which integer to return as an error, defaulting to 0. The function returns an integer. By making this annotations the reader will have better understanding of what the function does and IDEs will detect some type mismatch errors, but they will not be evaluated at runtime.
Okey so we are going to print a menu, lets also make a function for it. Actually, we are going to make a function that returns a function. The outter funtion will build the menu itself, and the returned function will print it and request for the user input.
def menu_factory(options: List[str], input_request: str) -> Callable[[], int]: # Number of options options_number = len(options)- # Menu text menu_text_lines = ["MENU:"] for i, option in enumerate(options): menu_text_lines.append(f"\t{i+1}. {option}") menu_text = "\n".join(menu_text_lines)- # Input request text input_request += f" (1..{options_number}): "- # Create the function that will be called to print the menu def menu_function() -> int: # Print the menu text we have previously built print(menu_text)- # Get the input from the user until he gives a valid one choice = input_integer(input_request) while not(0 < choice <= options_number): print(f"It must be a number between 1 and {options_number}.") choice = input_integer(input_request)- # Return the choice of the user return choice- return menu_function-
As you can see, functions can be defined inside other blocks and returned as any other object would have been. The function accepts a list of strings which are the options and an additional string to request the user for input. It will build the full messages adding the numbers and prepare the function that we will later call. In this case, the menu_factory function would be called like this:
menu = menu_factory( [ "Create Binary File.", "Display Binary File.", "Search for a given roll number.", "Input roll number and mark, Update mark of the student.", "Delete a record for a given roll number.", "Display the details of the students getting average marks " "more than 80.", "Append new records at the end of file.", "Exit", ], "Choose a command")-
And now, menu() will print the menu, request the user choice and return that choice after validating it is a proper number in the correct range.
The next thing we will have is a class to store the information of each student instead of a list. It will have 4 attributes (name, roll number, age and mark). The constructor (__init__) will just save them. I also added a __repr__ that tells python how to print Student objects. The __slots__ at the top of the class definition is a memory optimization. By setting __slots__ we tell the class which exact attributes it will have instead of having to store them as a generic dictionary. If you remove this line it will still work exactly the same, but each student you load will consume a little bit more RAM.
class Student: __slots__ = 'name', 'roll_no', 'age', 'mark'- def __init__(self, name: str, roll_no: int, age: int, mark: int) -> None: self.name = name self.roll_no = roll_no self.age = age self.mark = mark- def __repr__(self) -> str: return f"Student<name={self.name}, roll_no={self.roll_no}, " \ f"age={self.age}, mark={self.mark}>"-
We are pretty much done but there is another thing that we will do quite a bunch of times, reading and writting to the file. Lets create some auxiliar functions for that to. The read_file function will create a list of Stundets. The first try: ... except FileNotFoundError: pass block detects if the file can't be found (retunring an empty list of Students). The with open(...) as f: ... if a better approach than calling f.close() afterwards. Python itself will close the file when you get out of that with block, doesn't matter if it is due to an exception or any other reason. So basically we know for sure that the file will be closed no matter what. The inner try: ... except EOFError: break is to detect when have we ended reading the file and get out of the infinite while True: ... loop.
def read_file(path: str) -> List[Student]: content = [] try: with open(path, 'rb') as f: while True: try: content.append(pickle.load(f)) except EOFError: # Break the loop when reached end of the file break except FileNotFoundError: # Don't raise if the file doesn't exist pass return content-
The write function is pretty simple, open the file, write the content, done. Same goes for append.
def write_file(path: str, content: List[Student]) -> None: with open(path, 'wb') as f: for row in content: pickle.dump(row, f)--def append_file(path: str, content: List[Student]) -> None: with open(path, 'ab') as f: for row in content: pickle.dump(row, f)-
So now we have an input_integer function to read integers from the user, a menu_factory function that will build the menu, a Student class that will store each student's info, and a read_file, write_file and append_file functions. We can start implementing our logic. I'm going to create a dictionary of functions where the key is going to be the integer choice and the value are the functions that we will call to implemnent that option. You will see how choice_X functions will be super simple now that we have set up those auxiliary methods.
import picklefrom typing import Callable, List--FILENAME = 'student.bat'--def input_integer(request: str, *, error: int = 0) -> int: # ...--def menu_factory(options: List[str], input_request: str) -> Callable[[], int]: # ...--class Student: # ...--def read_file(path: str) -> List[Student]: # ...--def write_file(path: str, content: List[Student]) -> None: # ...--def append_file(path: str, content: List[Student]) -> None: # ...--if __name__ == '__main__' : # Create the menu function from the factory menu = menu_factory( [ "Create Binary File.", "Display Binary File.", "Search for a given roll number.", "Input roll number and mark, Update mark of the student.", "Delete a record for a given roll number.", "Display the details of the students getting average marks " "more than 80.", "Append new records at the end of file.", "Exit", ], "Choose a command" )- def choice_1() -> None: students = [] for i in range(1, input_integer("How many entries? ") + 1): print(f"Entry number {i}:") students.append(Student( input("\tName: "), input_integer("\tRoll number: "), input_integer("\tStudent age: "), input_integer("\tAverage mark: "), )) write_file(FILENAME, students)- def choice_2() -> None: print(read_file(FILENAME))- def choice_3() -> None: roll_no = input_integer("Roll number of the student to find: ") for student in read_file(FILENAME): if student.roll_no == roll_no: print(student) break else: # This will only be executed if no break was found print(f"Roll number {roll_no} not found in data file.")- def choice_4() -> None: roll_no = input_integer("Roll number of the student to update: ") students = read_file(FILENAME) for i, student in enumerate(students): if student.roll_no == roll_no: break else: # This will only be executed if no break was found print(f"Roll number {roll_no} not found in data file.") return- students[i].mark = input_integer("New average mark: ") write_file(FILENAME, students)- def choice_5() -> None: roll_no = input_integer("Roll number of the student to delete: ") students = read_file(FILENAME) for i, student in enumerate(students): if student.roll_no == roll_no: break else: # This will only be executed if no break was found print(f"Roll number {roll_no} not found in data file.") return- del students[i] write_file(FILENAME, students)- def choice_6() -> None: for i, student in enumerate(read_file(FILENAME)): if student.mark >= 80: print(student)- def choice_7() -> None: students = [] for i in range(1, input_integer("How many entries? ") + 1): print(f"Entry number {i}:") students.append(Student( input("\tName: "), input_integer("\tRoll number: "), input_integer("\tStudent age: "), input_integer("\tAverage mark: "), )) append_file(FILENAME, students)- menu_callbacks = { 1: choice_1, 2: choice_2, 3: choice_3, 4: choice_4, 5: choice_5, 6: choice_6, 7: choice_7, }- # Option number 8 is Exit while (choice := menu()) != 8: print() try: callback = menu_callbacks[choice] except KeyError: print("NOT IMPLEMENTED YET") else: callback() print("\n")-
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Top Answer
Answered Jul 14, 2019 · -2 votes
loop the numbers from 1 to N and check if a number is even with the modulus operator (%). The remainder will be zero in a division by 2 if the number is even.
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Top Answer
Answered Sep 27, 2016 · 2 votes
The byte[] values represent the byte-encoded Big Endian representation of the big integers. That's almost, but not exactly, the same as the DER encoding.
For Modulus, the RSAParameters structure expects the DER value but with the optional sign-padding 0x00 byte removed. For Exponent it's the same.
If you have a private key structure then D must have the same length byte[] as Modulus (which might mean you have to prepend 0x00 values). P, Q, DP, DQ, and InverseQ are all required if D is specified, and they must all have exactly half the length of Modulus, which may require removing DER padding bytes or may require inserting some.
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People also ask
What are ISO 4217 codes?
- The ISO 4217 lists of codes are used in banking and business globally in all their various domains of activities. This International Standard specifies the structure for a three-letter alphabetic code and an equivalent three-digit numeric code for the representation of currencies.
ISO 4217:2015(en), Codes for the representation of currencies
www.iso.org/obp/ui/en/#!iso:std:64758:enIs ISO 4217 a current version?
- Therefore this version remains current. ISO 4217:2015 specifies the structure for a three-letter alphabetic code and an equivalent three-digit numeric code for the representation of currencies. For those currencies having minor units, it also shows the decimal relationship between such units and the currency itself.
ISO 4217:2015 - Codes for the representation of currencies
www.iso.org/cms/ render/live/en/sites/isoorg/contents/data/standard/06/47/64758.htmlWhat is the exponent of a currency?
- This is indicated in the standard by the currency exponent. For example, USD has exponent 2, while JPY has exponent 0. Mauritania does not use a decimal division of units, setting 1 ouguiya (UM) = 5 khoums, and Madagascar has 1 ariary = 5 iraimbilanja .
ISO 4217 - Simple English Wikipedia, the free encyclopedia
simple.wikipedia.org/wiki/ISO_4217Which currency is represented by the code XEU?
- The euro is represented by the code EUR (EU is included in the ISO 3166-1 reserved codes list to represent the European Union ). The predecessor to the euro, the European Currency Unit (ECU), had the code XEU.
ISO 4217 - Simple English Wikipedia, the free encyclopedia
simple.wikipedia.org/wiki/ISO_4217stackoverflow.com › questions › 638227iso - .NET Currency exponent ISO_4217 - Stack Overflow
stackoverflow.com › questions › 638227Dec 3, 2009 · I can't see any property that represents this at the minute, so if anyone knows definitively if it exists, before I look for it / buy it from ISO. Currency Exponent is the minor units of the currency. http://en.wikipedia.org/wiki/ISO_4217 - e.g. UK is "2"
www.iso.org › obp › uiISO 4217:2015(en), Codes for the representation of currencies
www.iso.org › obp › uiThe ISO 4217 lists of codes are used in banking and business globally in all their various domains of activities. 1 Scope This International Standard specifies the structure for a three-letter alphabetic code and an equivalent three-digit numeric code for the representation of currencies.
simple.wikipedia.org › wiki › ISO_4217ISO 4217 - Simple English Wikipedia, the free encyclopedia
simple.wikipedia.org › wiki › ISO_4217ISO 4217 includes codes not only for currencies, but also for precious metals (gold, silver, palladium and platinum; by definition expressed per one troy ounce, as compared to "1 USD") and certain other entities used in international finance, e.g. Special Drawing Rights.
learn.microsoft.com › esg-data-model › currencyCurrency in ESG data model - Microsoft Cloud for Sustainability
learn.microsoft.com › esg-data-model › currencyApr 25, 2024 · This is indicated in the standard by the currency exponent. For example USD has exponent 2, while JPY has exponent 0. ISO 4217 includes codes not only for currencies, but also for precious metals (gold, silver, palladium and platinum; by definition expressed per one troy ounce, as compared to "1 USD") and certain other entities used in ...
rich-iannone.github.io › DiagrammeR › referenceISO-4217 currency data. — currencies • DiagrammeR
rich-iannone.github.io › DiagrammeR › referencecurr_number. the three-digit code number assigned to each currency under the ISO-4217 standard. exponent. the base 10 exponent of the minor currency unit in relation to the major currency unit (it can be assumed also to be number of decimal places that is commonly considered for the currency) currency_name. the English name of the currency.
uxpickle.com › guidelines-for-currency-formattingGuidelines for Currency Formatting (with ISO 4217 Table)
uxpickle.com › guidelines-for-currency-formattingApr 24, 2022 · ISO 4217 is the international standard for currency codes. We’ll share a table at the end of this article. It includes a three-letter alphabetic code for each currency. For example, USD is the code for US dollars, EUR is the code for Euros, and GBP is the code for British Pounds. Table of Contents. When to Use Currency Codes vs. Currency Symbols.
stackoverflow.com › questions › 3994016Java: Currency symbol based on ISO 4217 currency cod
stackoverflow.com › questions › 3994016Feb 20, 2011 · 4 Answers. Sorted by: 33. Currency.getSymbol() returns the currency symbol relative to the default locale. Gets the symbol of this currency for the default locale. For example, for the US Dollar, the symbol is "$" if the default locale is the US, while for other locales it may be "US$".
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