如何使用Pandas库打印数据集（CSV文件）的尺寸并打印一些行？

Question

So I am programming in Python 3, and would like to print out the dimensions of a dataset (csv file) using the pandas library dataframe, and also do a few other things that I dont quite grasp the idea of? this is just an example as I only need explanation on how. Say I have 2 functions:

in func1 i have (supposedly) loaded a dataset using pandas:

def func1(a):

namesOfColumns = ["The sepal-length", "The sepal-width", "The petal-length", "The petal-width", "class"]

a = "some_file"

some_file = pd.read_csv(a)

return (some_file)

def func2(data):

#code for printing the dimensions of the dataset
#code for printing the top 3 lines
#code for printing the mean and standard variation of the sepal-width
#code for plot box plot of each attribute

Would someone explain how I can approach the steps in func2?

Answer 1

Code for printing the dimensions of the dataset:

print(data.info())  # Descriptive info about the DataFrame
print(data.shape)  # gives a tuple with the shape of DataFrame

Code for printing the top 3 lines:

print(data.head(3))

Print mean and standard variation of the sepal-width:

print(data.describe())  # General statistics
print(data['Sepal_Width'].mean(), data['Sepal_Width'].std())  # Mean & std dev of Sepal_Width only

Code for plot box plot of each attribute:

data.boxplot(namesOfColumns)