●　Python is case-sensitive

　　　例：　print works ; PRINT doesn't

●　Expressions & Statements:

　　例：　Expression - "Game Over"
　　　　　Statement - print "Game Over"

●　Sequence:

　　Sequences fall into one of the two categories: mutable or immutable.
　　　　◎ Mutable means can be changed
　　　　◎ Immutable means can be changed


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