motorcycles=[]
motorcycles.append('honda')
motorcycles.append('yamaha')
motorcycles.append('suzuki')
print('\n',motorcycles)
输出的列表前面有一个空白

motorcycles=[]
motorcycles.append('honda')
motorcycles.append('yamaha')
motorcycles.append('suzuki')
print('\n',motorcycles)
输出的列表前面有一个空白

因为你加了一个换行符,把换行符去掉就没事了
motorcycles=[]
motorcycles.append('honda')
motorcycles.append('yamaha')
motorcycles.append('suzuki')
print(motorcycles)