Pandas Tutorial for Data Science

📘 Data Science 👁 47 views 📅 Nov 14, 2025
⏱ Estimated reading time: 1 min

Introduction

Pandas is the most important library for data manipulation and analysis. It provides two key data structures: Series and DataFrame.

1. Creating a Series


import pandas as pd

s = pd.Series([10, 20, 30])
print(s)
  

2. Creating a DataFrame


df = pd.DataFrame({
  "Name": ["John", "Mary"],
  "Age": [28, 34]
})
print(df)
  

3. Reading Data


df = pd.read_csv("data.csv")
df.head()
  

4. Selecting Columns


df["Age"]
df[["Name", "Age"]]
  

5. Filtering Data


df[df["Age"] > 30]
  

6. Handling Missing Values


df.isnull().sum()
df.fillna(0)
df.dropna()
  

7. Sorting Data


df.sort_values("Age", ascending=False)
  

8. Grouping Data


df.groupby("Department")["Salary"].mean()
  

9. Merging DataFrames


merged = pd.merge(df1, df2, on="id")
  

Conclusion

Pandas is the heart of data analysis, making data cleaning and transformation fast and efficient.


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