格式化类：%、format()

拼接类: +、()、join()

  1. # 拼接并换行显示
  2. import sys
  4. print("\n".join(sys.path))

填值类：f-string

  1. name = 'zaygee'
  2. myname = 'python_test'
  3. print("--------------格式化类----------------")
  4. print('i am %s,i am studying %s' % (name, myname))
  5. print("i am {0},i am studying {1}".format(name, myname))
  6. print("-------------拼接类--------------------")
  7. print(name + ' ' + myname)
  8. list_info = ['zaygee', 'python']
  9. print(' '.join(list_info))
  10. print("-------------------填值类-------------------")
  11. print(f'i am {name},i am studying {myname}')
  13. #--------------格式化类----------------
  14. #i am zaygee,i am studying python_test
  15. #i am zaygee,i am studying python_test
  16. #-------------拼接类--------------------
  17. #zaygee python_test
  18. #zaygee python
  19. #-------------------填值类-------------------
  20. #i am zaygee,i am studying python_test

字符串对齐方式

  1. print("{:<10}".format("a")) # :< 为左对齐
  2. print("{:>10}".format("a")) # :< 为右对齐
  3. print("{:^10}".format("a")) # :^ 居中对齐
  5. # a         
  6. #          a
  7. #     a   
  10. for x in range(10):
  11.     # 不指定默认左对齐
  12.     print("{:2d} {:3d} {:5d}".format(x, x*x, x*x*x))
  14. #  0   0     0
  15. #  1   1     1
  16. #  2   4     8
  17. #  3   9    27
  18. #  4  16    64
  19. #  5  25   125
  20. #  6  36   216
  21. #  7  49   343
  22. #  8  64   512
  23. #  9  81   729