Many Values to Multiple Variables
Python allows you to assign values to multiple variables in one line:
Example
x, y, z = "Orange", "Banana", "Cherry"
print[x]
print[y]
print[z]
Try it Yourself »
Note: Make sure the number of variables matches the number of values, or else you will get an error.
One Value to Multiple Variables
And you can assign the same value to multiple variables in one line:
Unpack a Collection
If you have a collection of values in a list, tuple etc. Python allows you to extract the values into variables. This is called unpacking.
Example
Unpack a list:
fruits = ["apple", "banana", "cherry"]
x, y, z = fruits
print[x]
print[y]
print[z]
Try it Yourself »
Learn more about unpacking in our Unpack Tuples Chapter.
So I have tried searching this but apparently nobody ever needed to do this simple thing before?
I want to a variable to have multiple strings. so basically it is:
command = input[]
commands = "start" or "stop" or "help"
while command.lower[] == commands:
dosomething[]
else
dosomething[]
This is basically the idea, but it only take the first string which is "start" but ignores the other 2. I understand that it reads it as
[ commands = "start" ] so I tried making it commands = "start" or commands = "stop" or commands = "help" but it flat out says it is wrong. so what did I do instead? Can someone help? Thanks
asked Dec 13, 2021 at 19:55
4
What you need is a list, then check for inclusion with if [not while which is a loop]
command = input[">>"]
commands = ["start", "stop", "help"]
if command.lower[] in commands:
print["start/stop/help"]
else:
print["other"]
answered Dec 13, 2021 at 19:59
azroazro
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A variable is a segment of memory with a unique name used to hold data that will later be processed. Although each programming language has a different mechanism for declaring variables, the name and the data that will be assigned to each variable are always the same. They are capable of storing values of data types.
The assignment operator[=] assigns the value provided to its right to the variable name given to its left. Given is the basic syntax of variable declaration:
Syntax: var_name = value
Example:
a = 4
Assign Values to Multiple Variables in One Line
Given above is the mechanism for assigning just variables in Python but it is possible to assign multiple variables at the same time. Python assigns values from right to left. When assigning multiple variables in a single line, different variable names are provided to the left of the assignment operator separated by a comma. The same goes for their respective values except they should be to the right of the assignment operator.
While declaring variables in this fashion one must be careful with the order of the names and their corresponding value first variable name to the left of the assignment operator is assigned with the first value to its right and so on.
Example 1:
Variable assignment in a single line can also be done for different data types.
Python3
a, b = 4, 8
print["value assigned to a"]
print[a]
print["value assigned to b"]
print[b]
Output:
value assigned to a 4 value assigned to b 8
Example 2:
Not just simple variable assignment, assignment after performing some operation can also be done in the same way.
Python3
print["assigning values of different datatypes"]
a, b, c, d = 4, "geeks", 3.14, True
print[a]
print[b]
print[c]
print[d]
Output:
assigning values of different datatypes 4 geeks 3.14 True
Example 3:
Assigning different operation results to multiple variable.
Python3
a, b = 8, 3
add, pro = [a+b], [a*b]
print[add]
print[pro]
Output:
11 24
Example 4:
Here, we are storing different characters in a different variables.
Python3
string = "Geeks"
a, b, c = string[0], string[1:4], string[4]
print[a]
print[b]
print[c]
Output:
G eek s