Introduction to Operators and Strings Data Type in Python — Flashcards

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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…

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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.

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With numbers, + performs addition. With strings, + concatenates, or joins, two strings into one. For example, 'Delhi' + 'NCR' gives 'DelhiNCR'.

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In strings, * repeats the string a given number of times. For example, 'Delhi' * 2 gives 'DelhiDelhi'. This is called repetition or replication.

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/ means division, % means remainder, ** means exponentiation, and // means integer division. For example, pow(2,3) gives 8, and 2**3 also gives 8.

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Arithmetic Operator Precedence in decreasing order is: () > ** > -(Negation) > / // * % > + > -. Parentheses are evaluated first, and subtraction is evaluated after addition in the given order list.

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Relational operators compare two operands and return True or False. They include <, >, <=, >=, !=, <>, and ==.

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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 …