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Top Questions People Ask About Pandas, NumPy, Matplotlib & Scikit-learn — Answered!

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 Whether you're a beginner or brushing up on your skills, these are the real-world questions Python learners ask most about key libraries in data science. Let’s dive in! 🐍 🐼 Pandas: Data Manipulation Made Easy 1. How do I handle missing data in a DataFrame? df.fillna( 0 ) # Replace NaNs with 0 df.dropna() # Remove rows with NaNs df.isna(). sum () # Count missing values per column 2. How can I merge or join two DataFrames? pd.merge(df1, df2, on= 'id' , how= 'inner' ) # inner, left, right, outer 3. What is the difference between loc[] and iloc[] ? loc[] uses labels (e.g., column names) iloc[] uses integer positions df.loc[ 0 , 'name' ] # label-based df.iloc[ 0 , 1 ] # index-based 4. How do I group data and perform aggregation? df.groupby( 'category' )[ 'sales' ]. sum () 5. How can I convert a column to datetime format? df[ 'date' ] = pd.to_datetime(df[ 'date' ]) ...
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Quick Guide to AI Prompt Engineering

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Here are roles & responsibilities of AI prompt engineer, which has growing demand in the USA and the rest of the world. The new Prompt engineering is a process that designs effective and engaging conversation starters for chatbots and virtual assistants.


Guide


Guide on Prompt Engineering



A key aspect of chatbot development, prompt engineering involves a deep understanding of user interests and behavior, as well as the ability to create prompts that are both relevant and varied. 

Discover more about the importance of prompt engineering and its role in creating successful chatbots and virtual assistants.

Prompt Writer for Apps like ChatGPT


A prompt writer for an app like ChatGPT is someone who creates prompts or conversation starters for the chatbot to engage users in conversation. These prompts are designed to be interesting, relevant, and varied to keep users engaged and encourage them to keep interacting with the chatbot.


Prompt writers for chatbots like ChatGPT often have a background in creative writing, marketing, psychology, or other related fields. They may work closely with developers and designers to ensure that the prompts align with the overall goals and objectives of the app and are presented in a visually appealing and user-friendly way.


Responsibilities



Some of the key responsibilities of a prompt writer for an app like ChatGPT may include researching user interests and trends, creating new prompts and updating existing ones, testing prompts to ensure they are effective, and collaborating with other members of the app development team to improve the overall user experience.


Overall, the role of a prompt writer is critical to the success of a chatbot like ChatGPT, as the quality and variety of prompts can directly impact user engagement and satisfaction.


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