摘要： from turtle import * def moveto(x,y): penup() goto(x,y) pendown() def main(): setup(800,600) speed(0) for radius in range(20, 200, 20): moveto(0,-radi 阅读全文

摘要： class Account: def __init__(self,name,account_number,initial_amount): self._name=name self._card_no=account_number self._balence=initial_amount def de 阅读全文

摘要： with open('data1_1.txt', 'r', encoding = 'utf-8') as f: data=f.readlines() n = 0 for line in data: if line.strip('\n') == '': continue n+=1 print(f'共{ 阅读全文

摘要： x=list(range(10)) print('整数输出1:',end='') for i in x: print(i,end=' ') print('\n整数输出2:',end='') for i in x: print(f'{i:02d}',end = '-') print('\n整数输出3: 阅读全文

摘要： x1,y1=1.2,3.57 x2,y2=2.26,8.7 print('{:-^40}'.format('输出1')) print('x1={},y1={}'.format(x1,y1)) print('x2={},y2={}'.format(x2,y2)) print('{:-^40}'.for 阅读全文