﻿ Python: Multiply all the items in a list - w3resource

# Python: Multiply all the items in a list

## Python List: Exercise-2 with Solution

Write a Python program to multiply all the items in a list.

Pictorial Presentation: Sample Solution:

Python Code:

``````def multiply_list(items):
tot = 1
for x in items:
tot *= x
print(multiply_list([1,2,-8]))
```
```

Sample Output:

```-16
```

Explanation:

In the above exercise -

def multiply_list(items):  -> This line defines a function called “multiply_list” that takes a single argument items. This function will be used to calculate the product of all the numbers in the items list.

• tot = 1  -> This line initializes a variable called tot to 1. This will be used to keep track of the running total of the product of the numbers in the list.
• for x in items:  -> This line starts a loop that will iterate over each element in the items list, one at a time.
• tot *= x  -> This line multiplies the current value of x by the tot variable. This is equivalent to the shorter form tot = tot * x.
• return tot  -> This line returns the final value of the tot variable after the loop has finished. This is the product of all the numbers in the items list.

print(multiply_list([1,2,-8]))  -> This line calls the multiply_list() function and passes in the list [1,2,-8]. The resulting product is then printed to the console using the print function.

Flowchart: ## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

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﻿

## Python: Tips of the Day

Decapitalizes the first letter of a string:

Example:

```def tips_decapitalize(s, upper_rest=False):
return s[:1].lower() + (s[1:].upper() if upper_rest else s[1:])
print(tips_decapitalize('PythonTips'))
print(tips_decapitalize('PythonTips', True))
```

Output:

```pythonTips
pYTHONTIPS
```

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