Python Tutorial for Beginners 14 - Default parameters and Multiple Arguments in Python

In this Python Tutorial for Beginners video I am going to show How to use Default Arguments, *args and **kwargs (Variable-length Arguments) in Python. Wo what are Default Values for Arguments ? Python allows as to provide default values for a function’s arguments. These arguments are optional when the function is called.Passing lists as arguments def sum(*args): - Lists can be passed in cases where there may be a variable number of arguments
Passing dictionaries to functions (def functionName(**kwargs)).

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DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. This help support the channel and allows us to continue to make videos like this. Thank you for the support!

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[kamaaladiin]

Man you are very very good explainer, in fact the best I have seen on youtube explaining Python. Thank you very much

[garvit]

I am watching your tutorial from the beginning and really you explain each topic very clearly from for such videos.

[shrinivaspandhare]

Because of YOU, I am able to learn Python... You are my Guru!!!

[Kamahley]

def main():
x = "happy"
y = "pumpkin"
z = "orange"
pumpkin = "sleepy"
happy = "vampire"


orange(y, x, z)
orange(x, z, y)
orange(pumpkin, z, "y")
z = "green"
orange("x", "pumpkin", z)
orange(y, z, happy)

def orange(z, y, x):
print(y + "and" + z + "were" + x)

main()


this question on hw is asking me what would be the 5 outputs for that and i cant seeem to figure out

[AliHaider-hglj]

I'm also doing python in my university
but you #the man really best

[saum]

I think in 3.4.2. you don't have to specify the default value when calling a function (per your video @ 3:50)

def studentscore ():
    name = input("Enter Name of the student:")
    score = float(input("Enter score:"))
    print ("Name:", name, ", ", "Score:", score)

[TheSD]

I have 2 questions, 1.) How to pass a single argument thru variables in case I am reading them from user? particularly 2nd argument onward. will it be something like - strudentScore (, y):
2.) how to set default values in case of multiple parameters. Will it be something like - strudentScore( name = "tom", *score= 0):

[surbhisinha]

This video tutorial is awesome with best explanation ever on YouTube for beginners. I am about to complete this video. If one can suggest videos on how to plot graphs by Python would be great :)

[stanislavdimitrov]

You have some deficiencies in English but you explain things well.

[jellejanwillie]

can you have multiple multiple arguments? because how does the function know, which values belong to which parameter, when you only divide them by the use of a comma
?

[jay_rana]

suppose function contains 2 or more arguments of same datatype, then. while calling that func how it would come to know which parameters to be given to which variable?

[commentery]

I have a doubt while explaining you said about multiple parameter right while output it shows curly braces we cant remove it or it is necessary? please explain this doubt

[srishtiasija]

hi, i've a confusion what if we wanted more than one string in this likewise diff students score diff marks accordingly.

[shaifaliverma]

Can u do the coding for the same output in python file.... Not in shell

[sakchhichoudhary]

Why we use " only for name and not for score?

[InDublin.]

def defaultParameter1(*name, *rollno):
print(name, rollno)
defaultParameter1("Student1", "student 2 ", 58, 59)

why i got an error

[prianckachatz]

If I am using *parameter and I want a default value, how to define that in the function argument. Eg: def score(name="Tom", *score=0), this is giving syntax error

[harikachagantivlogs]

what if I want to print subject name and followed by marks. (For eg. maths=90)
and even how to give multiple inputs (For eg. like in C, scanf("%d%d", &x, &y); )

[chicorebello]

When you initialize from tom to mark is it only temporary? bcoz in the following example where you initialize from 0 to 99 and execute it, it prints out tom again.

[chitralalawat]

using the asterik, i"m not liable to set default values... what to do?