python method to print asterisk pyramid

Python method of printing asterisk pyramid

Use asterisks to output a pyramid (number of lines is customized)

Recommendation: "python tutorial"

Problem-solving ideas:

① Define a function to encapsulate, and the name can be chosen

② Calculate the number of spaces that need to be output in each line (the number of lines minus one)

③ Calculate the number of * signs that need to be output in each line (twice the number of lines minus one)

Knowledge supplement:

Function prototype: range (start, end, scan):

Parameter meaning: start: counting starts from start. The default is to start from 0. For example, range(5) is equivalent to range(0, 5)

end: counting to the end of end, but not including end. For example: range (0, 4) is [0, 1, 2, 3,] without 4

scan: The distance between each jump, the default is 1. For example: range (0, 5) is equivalent to range (0, 5, 1). The jump interval of range (0, 5, 2) is 2, and its value is "0 2 4"

Source code :

operation result:

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