在Python中打印金字塔图案的程序

可以使用简单的 for 循环在Python中打印模式。第一个外循环用于处理行数，而内嵌套循环用于处理列数。操作打印语句，可以打印不同的数字图案、字母图案或星形图案。
本文展示了一些模式。

• 简单的金字塔图案

Python3

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern
def pypart(n):
     
    # outer loop to handle number of rows
    # n in this case
    for i in range(0, n):
     
        # inner loop to handle number of columns
        # values changing acc. to outer loop
        for j in range(0, i+1):
         
            # printing stars
            print("* ",end="")
      
        # ending line after each row
        print("\r")
 
# Driver Code
n = 5
pypart(n)

输出

* 
* * 
* * * 
* * * * 
* * * * * 

• 另一种方法：
  在Python 3 中使用 List，这可以以更简单的方式完成

Python

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern
def pypart(n):
    myList = []
    for i in range(1,n+1):
        myList.append("*"*i)
    print("\n".join(myList))
 
# Driver Code
n = 5
pypart(n)

输出

*
**
***
****
*****

• 180度旋转后

Python3

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern
def pypart2(n):
     
    # number of spaces
    k = 2*n - 2
 
    # outer loop to handle number of rows
    for i in range(0, n):
     
        # inner loop to handle number spaces
        # values changing acc. to requirement
        for j in range(0, k):
            print(end=" ")
     
        # decrementing k after each loop
        k = k - 2
     
        # inner loop to handle number of columns
        # values changing acc. to outer loop
        for j in range(0, i+1):
         
            # printing stars
            print("* ", end="")
     
        # ending line after each row
        print("\r")
 
# Driver Code
n = 5
pypart2(n)

输出

* 
      * * 
    * * * 
  * * * * 
* * * * * 

• 印刷三角

Python3

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern triangle
def triangle(n):
     
    # number of spaces
    k = n - 1
 
    # outer loop to handle number of rows
    for i in range(0, n):
     
        # inner loop to handle number spaces
        # values changing acc. to requirement
        for j in range(0, k):
            print(end=" ")
     
        # decrementing k after each loop
        k = k - 1
     
        # inner loop to handle number of columns
        # values changing acc. to outer loop
        for j in range(0, i+1):
         
            # printing stars
            print("* ", end="")
     
        # ending line after each row
        print("\r")
 
# Driver Code
n = 5
triangle(n)

输出

* 
   * * 
  * * * 
 * * * * 
* * * * * 

• 数字模式

Python3

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern of numbers
def numpat(n):
     
    # initialising starting number
    num = 1
 
    # outer loop to handle number of rows
    for i in range(0, n):
     
        # re assigning num
        num = 1
     
        # inner loop to handle number of columns
            # values changing acc. to outer loop
        for j in range(0, i+1):
         
                # printing number
            print(num, end=" ")
         
            # incrementing number at each column
            num = num + 1
     
        # ending line after each row
        print("\r")
 
# Driver code
n = 5
numpat(n)

输出

1 
1 2 
1 2 3 
1 2 3 4 
1 2 3 4 5 

• 无需重新分配的数字

Python3

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern of numbers
def contnum(n):
     
    # initializing starting number
    num = 1
 
    # outer loop to handle number of rows
    for i in range(0, n):
     
        # not re assigning num
        # num = 1
     
        # inner loop to handle number of columns
        # values changing acc. to outer loop
        for j in range(0, i+1):
         
            # printing number
            print(num, end=" ")
         
            # incrementing number at each column
            num = num + 1
     
        # ending line after each row
        print("\r")
 
n = 5
 
# sending 5 as argument
# calling Function
contnum(n)

输出

1 
2 3 
4 5 6 
7 8 9 10 
11 12 13 14 15 

• 字符模式

Python3

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern of alphabets
def alphapat(n):
     
    # initializing value corresponding to 'A'
    # ASCII value
    num = 65
 
    # outer loop to handle number of rows
    # 5 in this case
    for i in range(0, n):
     
        # inner loop to handle number of columns
        # values changing acc. to outer loop
        for j in range(0, i+1):
         
            # explicitly converting to char
            ch = chr(num)
         
            # printing char value
            print(ch, end=" ")
     
        # incrementing number
        num = num + 1
     
        # ending line after each row
        print("\r")
 
# Driver Code
n = 5
alphapat(n)

输出

A 
B B 
C C C 
D D D D 
E E E E E 

• 连续字符模式

Python3

# Python code 3.x to demonstrate star pattern
 
# Function to demonstrate printing pattern of alphabets
def  contalpha(n):
     
    # initializing value corresponding to 'A'
    # ASCII value
    num = 65
 
    # outer loop to handle number of rows
-   for i in range(0, n):
     
        # inner loop to handle number of columns
        # values changing acc. to outer loop
        for j in range(0, i+1):
         
            # explicitly converting to char
            ch = chr(num)
         
            # printing char value
            print(ch, end=" ")
         
            # incrementing at each column
            num = num +1
     
     
        # ending line after each row
        print("\r")
 
# Driver code
n = 5
contalpha(n)

• 输出：

A 
B C 
D E F 
G H I J 
K L M N O