# Flashcards: 04-logic

**Front:** boolean

**Back:** A value that is only True or False, e.g. is_ready = True

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**Front:** True

**Back:** print(True) shows True, always capitalized.

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**Front:** False

**Back:** print(False) shows False; lowercase true gives a NameError.

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**Front:** ==

**Back:** 5 == 5 asks a question and gives True; = stores, == asks.

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**Front:** !=

**Back:** 5 != 3 gives True.

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**Front:** >

**Back:** 5 > 3 gives True.

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**Front:** <

**Back:** 3 < 5 gives True.

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**Front:** >=

**Back:** age >= 10 is True when age is 10 or more.

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**Front:** <=

**Back:** age <= 10 is True when age is 10 or less.

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**Front:** if

**Back:** if age >= 10: runs its block only when the condition is true.

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**Front:** else

**Back:** else covers every other case, with no condition of its own.

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**Front:** elif

**Back:** elif chains choices in order; the first true condition wins.

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**Front:** colon

**Back:** if age >= 10: ends with a colon.

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**Front:** indentation

**Back:** An if block is indented four spaces; indent is meaning, not decoration.

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**Front:** for

**Back:** for side in range(4): repeats its block once per item.

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**Front:** range

**Back:** range(4) counts 0, 1, 2, 3; range(1, 4) counts 1, 2, 3.

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**Front:** while

**Back:** while count > 0: repeats while its condition is true; change what it tests.

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