Python functions part11
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This document discusses different types of arguments that can be passed to functions in Python, including required arguments, keyword arguments, default arguments, and passing lists as arguments. Required arguments must be passed to a function in the correct positional order. Keyword arguments allow the caller to identify arguments by parameter name instead of position. Default arguments assume a default value if no value is provided for that argument in the function call. Passing a list as an argument allows a function to accept a variable number of values. Examples are provided to illustrate each type of argument.
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-
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would look like this, given the following declaratio
ns:
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double target[5];
double target[5];
copy_arr(source, target1, 5);
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Several years of experience in algebra probably yields a consistent interpretation of the expression
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Most would expect that the multiplication would be the first operation, followed by a subtraction, and then an addition, yielding a value of 5. Performing those three operations in any other order would yield very different results.
When a programmer places such an expression into a program, they would expect it to perform the same series of operations. The interpreter or compiler making sense of the expression then must be able to construct the correct meaning of the input. Often one will hear of this behavior called
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The input for this assignment will arrive as an instantiated
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Implementation Hints
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The pseudocode for parsing a sum expression would therefore look something like this:
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- 1. Prof. Neeraj Bhargava Vishal Dutt Department of Computer Science, School of Engineering & System Sciences MDS University, Ajmer
- 2. Arguments Information can be passed into functions as arguments. Arguments are specified after the function name, inside the parentheses. You can add as many arguments as you want, just separate them with a comma.
- 3. Parameters and Arguments The terms parameter and argument can be used for the same thing: information that are passed into a function. From a function's perspective: A parameter is the variable listed inside the parentheses in the function definition. An argument is the value that is sent to the function when it is called.
- 4. Function Arguments • Required arguments • Keyword arguments • Default arguments • Passing a List as an Argument
- 5. Required arguments Required arguments are the arguments passed to a function in correct positional order. By default, a function must be called with the correct number of arguments. Meaning that if your function expects 2 arguments, you have to call the function with 2 arguments, not more, and not less. Example: def my_function(fname, lname): print(fname + " " + lname) my_function("Emil", "Refsnes")
- 6. Example 2 def printme( str ): "This prints a passed string into this function" print str return; # Now you can call printme function printme()
- 7. Keyword arguments Keyword arguments are related to the function calls. When you use keyword arguments in a function call, the caller identifies the arguments by the parameter name. You can also send arguments with the key = value syntax. This way the order of the arguments does not matter. Example def my_function(child3, child2, child1): print("The youngest child is " + child3) my_function(child1 = "Emil", child2 = "Tobias", child3 = "Linus")
- 8. Example2 def printme( str ): "This prints a passed string into this function" print str return; # Now you can call printme function printme( str = "My string")
- 9. Default Parameter Value A default argument is an argument that assumes a default value if a value is not provided in the function call for that argument. In simple way, If we call the function without argument, it uses the default value.
- 10. Example def printinfo( name, age = 35 ): "This prints a passed info into this function" print "Name: ", name print "Age ", age return; # Now you can call printinfo function printinfo( age=50, name="miki" ) printinfo( name="miki" ) Output Name: miki Age 50 Name: miki Age 35
- 11. Example def my_function(fname): print(Hello + " fname") my_function(“Aditya") my_function(“Rahul") my_function(“Khushi") Output Hello Aditya Hello Rahul Hello Khushi
- 12. Questions Explain Default Argument in function with example? Explain Keyword Argument in function with example? Explain Required Argument in function with example?