Introduction to Operators and Strings Data Type in Python
ICSE · Class 9 · Robotics & Artificial Intelligence
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What are operators in Python?
Answer
Operators are special symbols which represent computation. Values or variables used with operators are called operands, and together they form an expression. For example, 20 + 30 is an expression that…
What is an arithmetic operator?
Answer
Arithmetic operators are symbols such as +, -, *, /, %, **, and // that perform calculations on numbers. The + and * operators can also work with strings: + joins strings, and * repeats a string.
What does the + operator do with numbers and strings?
Answer
With numbers, + performs addition. With strings, + concatenates, or joins, two strings into one. For example, 'Delhi' + 'NCR' gives 'DelhiNCR'.
What does the * operator do in strings?
Answer
In strings, * repeats the string a given number of times. For example, 'Delhi' * 2 gives 'DelhiDelhi'. This is called repetition or replication.
What is the meaning of /, %, **, and // in arithmetic operations?
Answer
/ means division, % means remainder, ** means exponentiation, and // means integer division. For example, pow(2,3) gives 8, and 2**3 also gives 8.
State the order of arithmetic operator precedence.
Answer
Arithmetic Operator Precedence in decreasing order is: () > ** > -(Negation) > / // * % > + > -. Parentheses are evaluated first, and subtraction is evaluated after addition in the given order list.
What are relational operators?
Answer
Relational operators compare two operands and return True or False. They include <, >, <=, >=, !=, <>, and ==.
How do relational operators work on strings?
Answer
Relational operators also work on strings. Python compares two strings character by character by ASCII or ordinal values until a difference is found. Lowercase letters have higher ordinal values than …
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