实验二

task1

x = 'nba FIFA'
print(x.upper()) 
print(x.lower()) 
print(x.swapcase()) 
print()

 

 

x = 'abc'
print(x.center(10, '*'))
print(x.ljust(10, '*')) 
print(x.rjust(10, '*')) 
print()

 

 

x = '123'
print(x.zfill(10)) 
x = 123
print(str(x).zfill(10))
print()

 

 

x = 'phone_number'
print(x.isidentifier())
x = '222test'
print(x.isidentifier())
print()

 

 

x = ' '
print(x.isspace()) 
x = '\n'
print(x.isspace())
print()

 

 

x = 'python is fun'
table = x.maketrans('thon', '1234') 
print(x.translate(table)) 

 

 task2

x = [5, 11, 9, 7, 42] 
print('整数输出1: ', end = '') 
i = 0 
while i < len(x): 
    print(x[i], end = ' ') 
    i += 1 
print('\n整数输出2: ', end = '') 
i = 0 
while i < len(x):
    print(f'{x[i]:02d}', end = '-')
    i += 1
print('\n整数输出3: ', end = '') 
i = 0 
while i < len(x) - 1:
    print(f'{x[i]:02d}', end = '-')  
    i += 1
print(f'{x[-1]:02d}') 
print('\n字符输出1: ', end = '') 
y1 = [] 
i = 0 
while i < len(x): 
    y1.append(str(x[i])) 
    i += 1 
print('-'.join(y1)) 
print('字符输出2: ', end = '') 
y2 = []
i = 0 
while i < len(x): 
    y2.append( str(x[i]).zfill(2) ) 
    i += 1 
print('-'.join(y2)) 

 

 

 

 

 

 

 

task3
方法一

name_list = ['david bowie', 'louis armstrong', 'leonard cohen', 'bob dylan', 
'cocteau twins'] 
i = 0 
while i < len(name_list): 
    print(name_list[i].title()) 
    i += 1 
print() 

方法二

name_list = ['david bowie', 'louis armstrong', 'leonard cohen', 'bob dylan', 
'cocteau twins'] 
t = [] 
i = 0 
while i < len(name_list): 
    t.append(name_list[i].title()) 
    i += 1 

print('\n'.join(t))

 

 task4