python-01

Posted on Edited on In Valine:
Symbols count in article: 2k Reading time ≈ 2 mins.

For loop

  1. Print 4 rows 4 columns rectangle
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l = 4
for i in range(4):
    for j in range(4):
        print('*', end="")
    print(' ')

  1. Print traiangle

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    row = int(input('Type a number'))
    for i in range(1, row+1):
        print((row - i) * " ", end="")  # 打印空格
        print(i * "* ")  # 打印星号

  1. Print upside-down triangle

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    l = 4
    for i in range(1, l + 1):
        print((i - 1) * " ", end="")  # 打印空格
        print((4 - i + 1) * "* ")  # 打印星号

  2. Diamond

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row = int(input('Type a number'))
for i in range(1, row+1):
    print((row - i) * " ", end="")  # 打印空格
    print(i * "* ")  # 打印星号
for i in range(1, row + 1):
    print(i * " ", end="")  # 打印空格
    print((row - i) * "* ")  # 打印星号

While loop

  1. Number guessing
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import random

flag = False
random_num = random.randint(1, 100)
while not flag:
    guess = int(input('Please type a number you want to guess\n'))
    print(random_num)
    if guess < random_num:
        print('Your number is too small')
    elif guess > random_num:
        print('Your number is too big')
    else:
        print('perfect')
        flag = True

  1. 正序乘法表

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    i = 1
    while i <= 9:
        j = 1
        while j <= i:
            print('%d*%d = %2d\t' % (i, j, i * j), end='')
            j += 1
        i += 1
        print()

  2. 逆序乘法表

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    i = 9
    while i >= 1:
        j = 1
        while j <= i:
            print('%d*%d = %2d\t'%(j, i, i * j), end='')
            j += 1
        i -= 1
        print()

    1. triangle 

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      row = 1
      while row <= 5:
          j = 1
          while j <= 5 - row:
              print(' ', end='')
              j += 1
          k = 1
          while k <= 2 * row - 1:
              print('*', end='')
              k += 1
          print()
          row += 1
  1. pramid
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'''
*
**
***
****
*****
'''
i = 1
while i <= 5:
    j = 1
    while j <= i:
        print('*', end='')
        j += 1
    i += 1
    print()

  1. Rectangular Spotted Graph
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i = 1
while i <= 5:
    j = 1
    while j <= 5:
        if i == j:
            print('X', end='')
        elif j == 5 - i + 1:
            print('X', end='')
        else:
            print('*', end='')
        j += 1
    i += 1
    print()

"""
x00000x
0x00x00
000x000
00x0x00
0x000x0
x00000x
"""

Function

  1. Pass info from
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def greet_user(username):
    print("hello, " + username.title() + "!")


greet_user(input())