Python Tutorial Questions part-1

Python Tutorial Questions part-1

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  Python Questions &Answers Tutorial Part-1 Q.1. What is the role of keywords in Python language? List keywords provided by Python​. A) The Keywords in Python you can say as reserved words. All keywords are with Small case. Only 3 keywords are not Small case. Those are True, False and None and False nonlocal as finally not assert for or break from pass class global raise continue if return def import True del in try elif is while else lambda with except None yield Q.2. What is an identifier? How will you differentiate it from a variable? A). Identifier is an user defined variable. This can be name given to Function, Class, and Variable by user. The length can be any length. It cannot start with numbers. And, it cannot contain special chars. Q.3. what is a variable? State the rules used to define a variable in Python language. A). It is an user-defined variable. Basically it indicates a data-type. In Python, you can define dynamically where you want. The data type it assigns dynamically according to value you assigned to a variable. Example Char or Int
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  Q.4. Why documentationis necessary in a language? How documentation can be performed in Python? A). In Python, to make developer understand the logic, in the middle, you can write comments. These comments start with ‘#’. This is called documentation. Q.5. Explain the significance of data types in Python language? A). The value you assigned to a variable defined by you, says that, that particular type applies to that variable. Python supports 7 data types – Number, String, List, Tuple, Set, Dictionary and File Q.6. Identify the data type that appropriately describes the data given below: a. 32.e10 ​➔​ Complex b. -8.56e100 ​➔​ Float c. 34.j ​➔​ Complex d. -876 ​➔​ Int e. 432 ​➔​ Int f. 4375457L ​➔​ Long Q.7. List all the data types provided by Python language. int long float complex 50 3682936L 4.3 5.78j 555 -0X5789L 56.28 .863j -897 0231L -87.32 30+29J -1976 0XDE567AFE -56.27e10 4.24e-8j -936 -2467896435L 71.e19 45.j Q.8. How will you distinguish list and tuple data types? List - is like an array a= [1,2,3,4,5,6] Tuple - But it is immutable. That means data in a tuple is write protected. Data in a tuple is written using parenthesis and commas Q.9. Differentiate between set and dictionary data type in Python. Set is an unordered collection of unique items. a = {15, 20, 13, 45, 67}
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  Q.10. Explain allthe data types provided by Python language with appropriate illustrations. Number, String, List, Tuple, Set, Dictionary and File Example for Dictionary: dict2 = {'name': 'Smith', 'code': 1234, 'dept':'HR'} Dictionary is an unordered collection of key value pairs. The file data type is used in Python to store and work with files on the computer or on the Internet​. Q.11. What is a slicing operator? How can you use it? Illustrate. Python slicing is to extract part of string from your main string. This concept is called unstring in COBOL. Q.12. How can a user interact with the Python interpreter? A). By typing ‘python’ on Linux, you can enter into python interpreter. >>> Q.13. Signify the role of input and output functions provided by Python language. A). You can interact by using input() and print() functions. Input is to get input from user. Print is for output. 14. How will you format the output in Python? A). Output(), you can see many formats those you can use to display ● Print(‘ I am in output’, a) ● Print(‘I am {0} in output’.format(‘first’,’second’) ● Using format symbols Q​.15. Elaborate the significance of import command in Python with a suitable example. A). The import command you can use to import your’.py’ module into python interpreter.