在python中，可以使用内置函数inspect.currentframe()来获取当前执行的调用栈中的帧对象，然后使用帧对象的f_lineno属性来获取当前行号，最后使用print()函数将该行号打印出来。
具体代码类似这样:
python 调用打印机需要使用到 pywin32 库，使用 win32api.ShellExecute 可以调用默认打开指定文档的程序进行打印调用默认打印机进行打印
将第二个参数改成 printto 可以调用指定打印机进行打印，第四个参数是指定打印机名
获取打印机列表 list(map(lambda x:x[2], win32print.EnumPrinters(2)))
更多win32api参照： http://timgolden.me.uk/pywin32-docs/win32_modules.html
rows = int(input('输入列数：'))
for i in range(1, rows):
print('*' * i)
for i in range(1, rows):
for j in range(i):
print("*", end="")
print("")
rows = int(input('输入列数：'))
for i in range(1, rows):
print(' * ' * i)
for i in range(1, rows):
for j in range(1, i + 1):
print(" * ", end="")
print("")
rows = int(input('输入列数：'))
for i in range(1, rows):
if i % 2 != 0:
str = ('*' * i)
print(str.center(9, ' '))
rows = int(input('输入列数：'))
for i in range(0, rows):
print(" * " * rows)
for i in range(0, rows):
for j in range(0, rows):
print(" * ", end="")
print(" ")
for x in range(10):
for i in range(x, 10):
print('*', end='')
print('')
print('同一行打印直角三角形')
for j in range(10):
for x in range(0, j):
print(' ', end='')
for n in range(j, 19 - j):
print(' ', end='')
for k in range(0, j):
print(' ', end='')
print('')
print('直角三角形拼装心形')
for j in range(8):
for x in range(0, j):
print(' ', end='')
for n in range(j, 19 - j):
print(' ', end='')
for k in range(0, j):
print(' ', end='')
print('')
for i in range(10):
for j in range(0, 0 + i):
print(end=' ')
for k in range(0 + i, 10):
print('*', end=' ')
print('')
print('打印倒立等腰三角形1')
for j in range(10):
for x in range(0, j):
print(end=' ')
for n in range(j, 15 - j):
print('*', end='')
print('打印倒立等腰三角形2')
for i in range(10):
for j in range(0, 0 + i):
print(end=' ')
for k in range(0 + i, 10):
print('*', end=' ')
print('')
print('同一行打印两个等腰三角形')
for i in range(10):
for j in range(0, 10 - i):
print(end=' ')
for k in range(10 - i, 10):
print(' ', end=' ')
for n in range(0, 0):
print(end=' ')
for m in range(0 + i, 10):
print(' ', end=' ')
for jj in range(10, 10):
print(end=' ')
for kk in range(10 - i, 10):
print(' ', end=' ')
print('')
print('等腰三角形拼装心形')
for i in range(10):
for j in range(0, 10 - i):
print(end=' ')
for k in range(10 - i, 10):
print(' ', end=' ')
for n in range(0, 0):
print(end=' ')
for m in range(0 + i, 10):
print(' ', end=' ')
for jj in range(10, 10):
print(end=' ')
for kk in range(10 - i, 10):
print(' ', end=' ')
print('')
for i in range(20):
for j in range(0, 0 + i):
print(end=' ')
for k in range(0 + i, 20):
print('*', end=' ')
print('')
print('打印正方形')
for i in range(10):
for j in range(0, 10 - i):
print(end=' ')
for n in range(0, 0 + i):
print(end=' ')
for m in range(0 + i, 10):
print(' ', end=' ')
for k in range(10 - i, 10):
print(' ', end=' ')
print('')
