💬 Question: How to convert a dictionary to a CSV in Python? In Python, convert a dictionary to a CSV file using the DictWriter() method from the csv module. The csv.DictWriter() method allows you to insert a dictionary-formatted row (keys=column names; values=row elements) into the CSV file using its DictWriter.writerow() method. 🌍 Learn More: If … Read more
Background 💡 A dBase database file (DBF) is a database file format with the .dbf file extension used by various applications and database systems. 💡 A comma-separated values (CSV) file is a text file that uses a comma to separate fields of a data record (=line). Problem Formulation Given a .dbf file my_db.dbf. How to … Read more
The easiest way to convert a tab-delimited values (TSV) file to a comma-separated values (CSV) file is to use the following three lines of code: import pandas as pd df = pd.read_csv(‘my_file.txt’, sep=’\t’, header=None) df.to_csv(‘my_file.csv’, header=None) We’ll explain this and other approaches in more detail next—scroll down to Method 3 for this exact method. Problem … Read more
To convert a Pandas DataFrame into a CSV string rather than a CSV file, just use the pd.to_csv() function without any filename or path argument. The function returns a CSV string you can use for further processing in your Python script. Here’s an example: You can modify this output by passing the index=False argument: Now, … Read more
To export/convert a Pandas DataFrame to a CSV file, use the Pandas method to_csv(). Set the index=False argument if you don’t want the first column to be the index number in the CSV, which is usually the case. Let’s dive into a simple two-step example on how to convert a DataFrame to a CSV easily … Read more
To convert a compressed CSV file (.csv.gz) to a CSV file (.csv) and read it in your Python shell, use the gzip.open(filename, ‘rt’, newline=”) function call to open the gzipped file, the file.read() function to read its contents, and the file.write() function to write the CSV in a normal (unzipped) file. The gzip.open() function has … Read more
Problem: How to convert a list of dictionaries to a csv file? Example: Given is a list of dicts—for example salary data of employees in a given company: Your goal is to write the content of the list of dicts into a comma-separated-values (CSV) file format. Your out file should look like this: my_file.csv: Name,Job,Salary … Read more
This article concerns the conversion and handling of CSV file formats in combination with the UTF-8 encoding standard. 💡 The Unicode Transformation Format 8-Bit (UTF-8) is a variable-width character encoding used for electronic communication. UTF-8 can encode more than 1 million (more or less weird) characters using 1 to 4 byte code units. Example UTF-8 … Read more
If you get a binary input of tabular structured data, you can convert it to CSV easily by using str(byte)[2:-1] slicing to get rid of the b’…’ byte wrapper and apply string.replace(‘\t’, ‘,’) on the result to replace tabular characters with commas. Problem Formulation For example, say you have the following bytes format in your … Read more
To read a binary file, use the open(‘rb’) function within a context manager (with keyword) and read its content into a string variable using f.readlines(). You can then convert the string to a CSV using various approaches such as the csv module. Here’s an example to read the binary file ‘my_file.man’ into your Python script: … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to update and replace text in a file using Python. To make it more fun, we have the following running scenario: Tristen, a columnist with the Toronto Star, is writing a column about Niagara Falls. He has noticed a few issue(s) with his writing. … Read more
To convert a Microsoft Acces table (.accdb) to a CSV file in Python, use the following four steps: Establish database connection, Run the SQL query to select data, Store the data in the CSV using basic Python file I/O and the csv module, and Close the database connection. Here’s a specific example with additional annotations … Read more