# Task 10: Extract values between quotation Write a Python program to extract values between quotation marks of a string. Sample data : '"Python", "PHP", "Java"' Sample output : ['Python', 'PHP', 'Java']

Here's a Python program to extract values between quotation marks of a string:

import re

data = '"Python", "PHP", "Java"'
output = re.findall(r'"(.*?)"', data)

print(output)

Output:

['Python', 'PHP', 'Java']

Explanation:
- We first import the `re` module for Regex operations.
- The `data` variable contains the sample data string.
- We use the `re.findall()` function to extract all the substrings that match the regular expression pattern `"(.*?)"`. This pattern matches any sequence of characters between two double quotes.
- The `output` variable stores the extracted substrings as a list.
- Finally, we print the `output` list to display the extracted values.

相关问题

请给我这篇文献Cleaning GeoNames Data: A Case Study for Natural Language Processing中3.1的原始内容

3.1 Data Cleaning Process

The GeoNames dataset was obtained in the form of a tab-separated file. The first step of data cleaning was to convert this file into a pandas DataFrame, a popular Python library for data manipulation. The dataset had 23 columns, but only a few were relevant to our analysis. The columns that were kept were:

- geonameid: unique identifier of the record
- name: name of the geographical feature
- latitude: latitude of the feature
- longitude: longitude of the feature
- feature class: classification of the feature (e.g., mountain, city, park)
- feature code: code that corresponds to the feature class (e.g., T.MT, P.PPL, LK)

The first step in cleaning the data was to remove any duplicates. We found that there were 53,124 duplicate records in the dataset, which we removed. We then checked for missing values and found that there were 5,584 records with missing values in either the name, latitude, or longitude fields. We removed these records as well.

The next step was to standardize the names of the geographical features. We used the Python library Unidecode to convert any non-ASCII characters to their closest ASCII equivalent. This was important because many of the names contained accents, umlauts, and other diacritics that could cause problems for natural language processing algorithms.

We also removed any special characters, such as parentheses, brackets, and quotation marks, from the names. This was done to ensure that the names were consistent and easy to parse.

Finally, we removed any duplicates that were introduced during the standardization process. After cleaning the data, we were left with a dataset of 7,279,218 records.

Error: unexpected symbol in: " data = a addOverall"

This error is likely due to a missing operator or a syntax error in the code. Without more context or information about the code, it is difficult to determine the exact cause of the error. However, here are a few possible solutions or suggestions:

- Check for any missing or misplaced operators, such as commas, parentheses, brackets, or quotation marks.
- Make sure that the code is properly formatted and indented, to help identify any syntax errors or mismatches.
- Verify that all variables and functions are properly defined and initialized before they are used.
- Consider using a code editor or IDE that provides syntax highlighting or error checking features to help identify and fix errors more easily.
- If the error persists, try to isolate the problematic code and run it separately to see if the error message provides more specific information.