Sure, here is a Python solution using regular expressions (RegExp):

```python
import re

def extract_prices(grocery_list):
prices = []
for item in grocery_list:
match = re.search(r'$(.*?)$', item)
if match:
price = match.group(1)
prices.append(float(price))
return prices
```

Here's how it works:

1. We import the `re` module, which allows us to use regular expressions.
2. We define a function `extract_prices` that takes a list of grocery items as input.
3. We create an empty list `prices` to store the prices we extract.
4. We iterate over each item in the grocery list.
5. We use the `re.search` function to find a match for the regular expression `r'$(.*?)$'`. This expression matches any text enclosed in parentheses.
6. If a match is found, we use the `group` method to extract the text inside the parentheses. This is the price, but it's still a string.
7. We convert the price to a float and append it to the `prices` list.
8. After we've processed all the items in the grocery list, we return the `prices` list.

Question

Sure, here is a Python solution using regular expressions (RegExp):

```python
import re

def extract_prices(grocery_list):
    prices = []
    for item in grocery_list:
        match = re.search(r'$(.*?)$', item)
        if match:
            price = match.group(1)
            prices.append(float(price))
    return prices
```

Here's how it works:

1. We import the `re` module, which allows us to use regular expressions.
2. We define a function `extract_prices` that takes a list of grocery items as input.
3. We create an empty list `prices` to store the prices we extract.
4. We iterate over each item in the grocery list.
5. We use the `re.search` function to find a match for the regular expression `r'$(.*?)$'`. This expression matches any text enclosed in parentheses.
6. If a match is found, we use the `group` method to extract the text inside the parentheses. This is the price, but it's still a string.
7. We convert the price to a float and append it to the `prices` list.
8. After we've processed all the items in the grocery list, we return the `prices` list.

Knowee AI · Accepted Answer

Sure, here is a Python solution using regular expressions (RegExp):

```python
import re

def extract_prices(grocery_list):
    prices = []
    for item in grocery_list:
        match = re.search(r'$(.*?)$', item)
        if match:
            price = match.group(1)
            prices.append(float(price))
    return prices
```

Here's how it works:

1. We import the `re` module, which allows us to use regular expressions.
2. We define a function `extract_prices` that takes a list of grocery items as input.
3. We create an empty list `prices` to store the prices we extract.
4. We iterate over each item in the grocery list.
5. We use the `re.search` function to find a match for the regular expression `r'$(.*?)$'`. This expression matches any text enclosed in parentheses.
6. If a match is found, we use the `group` method to extract the text inside the parentheses. This is the price, but it's still a string.
7. We convert the price to a float and append it to the `prices` list.
8. After we've processed all the items in the grocery list, we return the `prices` list.

You are given a list of strings consisting of grocery items, with prices in parentheses. Return a list of prices in float format. Use RegExp to solve.

Question

Solution

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