Friday, November 15, 2024
Latest:

Questions & Answers

(Frequently asked questions)

Questions & Answers › Category: Programming Language
Filter:AllOpenResolvedClosedUnanswered
What does the expression d + pd.Timedelta('1 days 2 hours') do to DatetimeIndex object d, defined below? d = pd.date_range('11-Sep-2017', '17-Sep-2017', freq='2D')
AnsweredAdam asked 2 years ago • 
6768 views1 answers0 votes
What is the output of the following code? import pandas as pd d = pd.date_range('11-Sep-2017', '17-Sep-2017', freq='2D') len(d[d.isin(pd.to_datetime(['12-09-2017', '15-09-2017']))])
AnsweredAdam asked 2 years ago • 
7556 views1 answers-1 votes
What is the length of DatetimeIndex object created with the below expression? pd.date_range(’11-Sep-2017′, ’17-Sep-2017′, freq=’2D’)
AnsweredAdam asked 2 years ago • 
1830 views1 answers0 votes
Which of the following method is used to write a data frame data to an output CSV file?
AnsweredAdam asked 2 years ago • 
4186 views1 answers0 votes
________ is used as an argument of the readcsv method to make data of a specific column as an index.
AnsweredAdam asked 2 years ago • 
7318 views1 answers1 votes
Which of the following is used as an argument of read_csv method to skip first n lines of an input CSV file?
AnsweredAdam asked 2 years ago • 
6313 views1 answers1 votes
State whether the following statement is true or false? The read_csv method, by default, reads all blank lines of an input CSV file.
AnsweredAdam asked 2 years ago • 
6205 views1 answers0 votes
Which of the following is used as argument of read_csv method to treat data of specific columns as dates?
AnsweredAdam asked 2 years ago • 
5921 views1 answers0 votes
Which of the following method is used to read data from excel files?
AnsweredAdam asked 2 years ago • 
4292 views1 answers0 votes
State whether the following statement is true or false? The read_csv method can read multiple columns of an input file as indexes.
AnsweredAdam asked 2 years ago • 
5694 views1 answers0 votes
Which of the following expression returns data of column B of data frame df, defined below? import pandas as pd df = pd.DataFrame({'A':[34, 78, 54], 'B':[12, 67, 43]}, index=['r1', 'r2', 'r3'])
AnsweredAdam asked 2 years ago • 
6700 views1 answers0 votes
Which of the following expression is used to delete the column, A from a data frame named df?
AnsweredAdam asked 2 years ago • 
6005 views1 answers0 votes
Which of the following expression returns the second row of df, defined below? import pandas df = pd.DataFrame({'A':[34, 78, 54], 'B':[12, 67, 43]}, index=['r1', 'r2', 'r3'])
AnsweredAdam asked 2 years ago • 
6157 views1 answers0 votes
Which of the following expression is used to add a new column 'C' to a data frame df, with three rows?
AnsweredAdam asked 2 years ago • 
7027 views1 answers0 votes
What does the expression df.loc['r4'] = [67, 78] do for the data frame df, defined below? df = pd.DataFrame({'A':[34, 78, 54], 'B':[12, 67, 43]}, index=['r1', 'r2', 'r3'])
AnsweredAdam asked 2 years ago • 
6176 views1 answers0 votes
Which of the following expression returns the first two rows of df, defined below? import pandas as pd df = pd.DataFrame({'A':[34, 78, 54], 'B':[12, 67, 43]}, index=['r1', 'r2', 'r3'])
AnsweredAdam asked 2 years ago • 
5416 views1 answers0 votes
Which of the following expression returns last two rows of df, defined below? import pandas as pd df = pd.DataFrame({'A':[34, 78, 54], 'B':[12, 67, 43]}, index=['r1', 'r2', 'r3'])
AnsweredAdam asked 2 years ago • 
8277 views1 answers0 votes
Which of the following attributes or arguments are used to set column names of a data frame?
AnsweredAdam asked 2 years ago • 
3610 views1 answers0 votes
What is the shape of the data frame df defined in the below-shown code? import pandas as pd data = [{‘a’: 1, ‘b’: 2}, {‘a’: 5, ‘b’: 10, ‘c’: 20}] df = pd.DataFrame(data)
AnsweredAdam asked 2 years ago • 
1705 views1 answers0 votes
What is the output of the following code? import pandas as pd s = pd.Series([89.2, 76.4, 98.2, 75.9], index=list('abcd')) print(s[['c', 'a']])
AnsweredAdam asked 2 years ago • 
7055 views1 answers0 votes
Which of the following is not a Data Structure of Pandas?
AnsweredAdam asked 2 years ago • 
3917 views1 answers0 votes
Which of the following cannot be used to create a Data frame?
AnsweredAdam asked 2 years ago • 
2527 views1 answers0 votes
Which of the following expressions are used to check if each element of a series s is present in the list of elements [67, 32]. Series s is defined as shown below. s = pd.Series([99, 32, 67],list('abc'))
AnsweredAdam asked 2 years ago • 
4714 views1 answers0 votes
Which of the following argument is used to label the elements of a series?
AnsweredAdam asked 2 years ago • 
3707 views1 answers0 votes
What is the output of the expression 'b' in s, where s is the series defined as shown below?
AnsweredAdam asked 2 years ago • 
3990 views1 answers-1 votes
What is the shape of the data frame df defined in the below-shown code? import pandas as pd data = [{‘a’: 1, ‘b’: 2}, {‘a’: 5, ‘b’: 10, ‘c’: 20}] df = pd.DataFrame(data, columns=[‘a’, ‘b’])
AnsweredAdam asked 2 years ago • 
9855 views1 answers0 votes
What is the data type of series s defined in below code? import pandas as pd s = pd.Series([9.2, ‘hello’, 89])
AnsweredAdam asked 2 years ago • 
4521 views1 answers0 votes
Which of the following commands run only one test case, present in sample_module.py using pytest?
AnsweredAdam asked 2 years ago • 
9549 views1 answers0 votes
Pytest is available as a part of Python standard library. State true or false.
AnsweredAdam asked 2 years ago • 
4589 views1 answers0 votes
Pytest is capable of discovering and running tests written in unittest and nose. State true or false.
AnsweredAdam asked 2 years ago • 
3894 views1 answers0 votes
1…2021222324…30
Copyright © 2024 EASTER SCIENCE. All rights reserved.