The problem is asking to write a function that will calculate the average length of the word that comes before a specific word in a text.

Here is a step by step solution in Python:

1. First, we need to import the `re` module for regular expressions.

```python
import re
```

2. Define the function `prevword_ave_len(word)` that takes a string as an argument.

```python
def prevword_ave_len(word):
```

3. Inside the function, define a variable `text` that contains the text you want to search in. For this example, I will use a placeholder text.

```python
text = "This is a placeholder text. Replace it with your own text."
```

4. Split the text into a list of words using the `split()` method.

```python
words = text.split()
```

5. Initialize two variables, `total_length` and `count`, to 0. These will be used to calculate the average length of the preceding words.

```python
total_length = 0
count = 0
```

6. Loop through the list of words. If the word is found, add the length of the preceding word to `total_length` and increment `count` by 1. If the word is the first word in the text, add 0 to `total_length`.

```python
for i in range(len(words)):
if words[i] == word:
if i == 0:
total_length += 0
else:
total_length += len(words[i-1])
count += 1
```

7. After the loop, check if `count` is 0. If it is, return -1. Otherwise, return the average length of the preceding words.

```python
if count == 0:
return -1
else:
return total_length / count
```

8. Finally, call the function with the word you want to search for.

```python
print(prevword_ave_len('your_word'))
```

This function will return the average length of the word that precedes the specified word in the text. If the word does not appear in the text, the function will return -1.

Question

The problem is asking to write a function that will calculate the average length of the word that comes before a specific word in a text.

Here is a step by step solution in Python:

1. First, we need to import the `re` module for regular expressions.

```python
import re
```

2. Define the function `prevword_ave_len(word)` that takes a string as an argument.

```python
def prevword_ave_len(word):
```

3. Inside the function, define a variable `text` that contains the text you want to search in. For this example, I will use a placeholder text.

```python
    text = "This is a placeholder text. Replace it with your own text."
```

4. Split the text into a list of words using the `split()` method.

```python
    words = text.split()
```

5. Initialize two variables, `total_length` and `count`, to 0. These will be used to calculate the average length of the preceding words.

```python
    total_length = 0
    count = 0
```

6. Loop through the list of words. If the word is found, add the length of the preceding word to `total_length` and increment `count` by 1. If the word is the first word in the text, add 0 to `total_length`.

```python
    for i in range(len(words)):
        if words[i] == word:
            if i == 0:
                total_length += 0
            else:
                total_length += len(words[i-1])
            count += 1
```

7. After the loop, check if `count` is 0. If it is, return -1. Otherwise, return the average length of the preceding words.

```python
    if count == 0:
        return -1
    else:
        return total_length / count
```

8. Finally, call the function with the word you want to search for.

```python
print(prevword_ave_len('your_word'))
```

This function will return the average length of the word that precedes the specified word in the text. If the word does not appear in the text, the function will return -1.

Knowee AI · Accepted Answer