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This article mainly introduces how to use python to achieve the multiplication table, the text is very detailed, has a certain reference value, interested friends must read!

First, let's remember what the multiplication table 99 looks like.

Get to the point: implement the 99 multiplication table

You can learn the for loop range function format string print function

source code

#Outer for loop means print 9 lines for i in range(1, 10): #Inner layer for loop print column #First row 1 column, second row 2 columns, and so on for j in range(1, i+1): #Format output {rows}x{columns}={rows multiplied by columns} print('{}x{}={}\t'.format(j, i, i*j), end='') print()

results

nine-ninth multiplication table

Previous knowledge decomposition range

The python range() function creates a list of integers, typically used in for loops.

function syntax

range(start, stop[, step])

start: Counting starts from start. The default starts at 0. For example, range (5) is equivalent to range (0, 5);

stop: Counts to the end of stop, but does not include stop. For example: range (0, 5) is [0, 1, 2, 3, 4] without 5

step: step size, default is 1. For example: range (0, 5) is equivalent to range(0, 5, 1)

example

>>>range(10) #from 0 to 10[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]>> range(1, 10) #1 to 10[1, 2, 3, 4, 5, 6, 7, 8, 9]format

str.format(), which enhances string formatting.

Basic syntax is via {}

example

"{}--{}".format("hello", "world") #Do not set the specified position, in the default order 'hello--world'for loop

Here's a animation to demonstrate the for loop

Multiplication table decomposition outputs 0-9for i in range(1, 10): print(i)

output result

1234567891 to 9 without linebreaking

print ends with a newline by default

There is an end parameter that tells the print function to end with an empty string (output does not wrap)

for i in range(1,10): print(i,end='')

output result

123456789 with indentation

In python strings\t represents a tab indent

for i in range(1,10): print(i,"\t",end='')

Output result: ″ G9G ** indented second writing ** ″ G10G

The output is consistent:

1 2 3 4 5 6 7 8 9 nested outputs

nesting: imagine a table with outer layers for rows (9 rows) and contents for columns (9 columns)

The outer layer is printed ().

for i in range(1,10): for j in range(1,10): print("{}\t".format(j),end='') print()

results

1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 Output multiplication table

where i stands for row and j stands for column, and the multiplication table is output in format.

for i in range(1,10): for j in range(1,10): print("{}×{}={}\t".format(i,j,i*j),end='') print()

Results:

1×1=1 1×2=2 1×3=3 1×4=4 1×5=5 1×6=6 1×7=7 1×8=8 1×9=9 2×1=2 2×2=4 2×3=6 2×4=8 2×5=10 2×6=12 2×7=14 2×8=16 2×9=18 3×1=3 3×2=6 3×3=9 3×4=12 3×5=15 3×6=18 3×7=21 3×8=24 3×9=27 4×1=4 4×2=8 4×3=12 4×4=16 4×5=20 4×6=24 4×7=28 4×8=32 4×9=36 5×1=5 5×2=10 5×3=15 5×4=20 5×5=25 5×6=30 5×7=35 5×8=40 5×9=45 6×1=6 6×2=12 6×3=18 6×4=24 6×5=30 6×6=36 6×7=42 6×8=48 6×9=54 7×1=7 7×2=14 7×3=21 7×4=28 7×5=35 7×6=42 7×7=49 7×8=56 7×9=63 8×1=8 8×2=16 8×3=24 8×4=32 8×5=40 8×6=48 8×7=56 8×8=64 8×9=72 9×1=9 9×2=18 9×3=27 9×4=36 9×5=45 9×6=54 9×7=63 9×8=72 9×9=81

We found that the multiplication table was half full.

This is easy to handle. We do not loop more than the number of rows per column.

There's only one column in the first row.

The second row has only two columns.

In the third row, there are only three columns.

….

When the first row is on, there are only nine columns.

The key is that the second parameter of range is i+1.

for i in range(1,10): for j in range(1,i+1): print("{}×{}={}\t".format(i,j,i*j),end='') print()

The final result is:

1×1=1 2×1=2 2×2=4 3×1=3 3×2=6 3×3=9 4×1=4 4×2=8 4×3=12 4×4=16 5×1=5 5×2=10 5×3=15 5×4=20 5×5=25 6×1=6 6×2=12 6×3=18 6×4=24 6×5=30 6×6=36 7×1=7 7×2=14 7×3=21 7×4=28 7×5=35 7×6=42 7×7=49 8×1=8 8×2=16 8×3=24 8×4=32 8×5=40 8×6=48 8×7=56 8×8=64 9×1=9 9×2=18 9×3=27 9×4=36 9×5=45 9×6=54 9×7=63 9×8=72 9×9=81 The animation shows the execution process of the nine-nine multiplication table

The above is "how to use python to achieve the multiplication table" all the contents of this article, thank you for reading! Hope to share the content to help everyone, more relevant knowledge, welcome to pay attention to the industry information channel!

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