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实例051：按位与
题目：学习使用按位与 & 。
程序分析：0&0=0; 0&1=0; 1&0=0; 1&1=1。
a=0o77print(a)b=a&3print(b)b=b&7print(b)实例052：按位或
题目：学习使用按位或 | 。
程序分析：0|0=0; 0|1=1; 1|0=1; 1|1=1
a=0o77print(a|3)print(a|3|7)实例053：按位异或
题目：学习使用按位异或 ^ 。
程序分析：0^0=0; 0^1=1; 1^0=1; 1^1=0
a=0o77print(a^3)print(a^3^7)实例054：位取反、位移动
题目：取一个整数a从右端开始的4〜7位。
程序分析：可以这样考虑： (1)先使a右移4位。 (2)设置一个低4位全为1,其余全为0的数。可用~(~0<<4) (3)将上面二者进行&运算。
a=int(input('输入一个数字: '))b=0 # 0b=~b # 1b=b<<4 # 10000b=~b # 1111c=a>>4d=c&bprint('a:',bin(a))print('b:',bin(b))print('c:',bin(c))print('d:',bin(d))实例055：按位取反
题目：学习使用按位取反~。
程序分析：~0=1; ~1=0;
print(~234)print(~~234)实例056：画圈
题目：画图，学用circle画圆形。
from tkinter import *canvas=Canvas(width=800,height=600,bg='yellow')canvas.pack(expand=YES,fill=BOTH)k=1j=1for i in range(26): canvas.create_oval(310-k,250-k,310+k,250+k,width=1) k+=j j+=0.3mainloop()实例057：画线
题目：画图，学用line画直线。
if __name__ == '__main__': from tkinter import * canvas = Canvas(width=300, height=300, bg='green') canvas.pack(expand=YES, fill=BOTH) x0 = 263 y0 = 263 y1 = 275 x1 = 275 for i in range(19): canvas.create_line(x0,y0,x0,y1, width=1, fill='red') x0 = x0 - 5 y0 = y0 - 5 x1 = x1 + 5 y1 = y1 + 5 x0 = 263 y1 = 275 y0 = 263 for i in range(21): canvas.create_line(x0,y0,x0,y1,fill = 'red') x0 += 5 y0 += 5 y1 += 5 mainloop()实例058：画矩形
题目：画图，学用rectangle画方形。
if __name__ == '__main__': from tkinter import * root = Tk() root.title('Canvas') canvas = Canvas(root,width = 400,height = 400,bg = 'yellow') x0 = 263 y0 = 263 y1 = 275 x1 = 275 for i in range(19): canvas.create_rectangle(x0,y0,x1,y1) x0 -= 5 y0 -= 5 x1 += 5 y1 += 5 canvas.pack() root.mainloop()实例059：画图（丑）
题目：画图，综合例子。
if __name__ == '__main__': from tkinter import * canvas = Canvas(width = 300,height = 300,bg = 'green') canvas.pack(expand = YES,fill = BOTH) x0 = 150 y0 = 100 canvas.create_oval(x0 - 10,y0 - 10,x0 + 10,y0 + 10) canvas.create_oval(x0 - 20,y0 - 20,x0 + 20,y0 + 20) canvas.create_oval(x0 - 50,y0 - 50,x0 + 50,y0 + 50) import math B = 0.809 for i in range(16): a = 2 * math.pi / 16 * i x = math.ceil(x0 + 48 * math.cos(a)) y = math.ceil(y0 + 48 * math.sin(a) * B) canvas.create_line(x0,y0,x,y,fill = 'red') canvas.create_oval(x0 - 60,y0 - 60,x0 + 60,y0 + 60) for k in range(501): for i in range(17): a = (2 * math.pi / 16) * i + (2 * math.pi / 180) * k x = math.ceil(x0 + 48 * math.cos(a)) y = math.ceil(y0 + 48 + math.sin(a) * B) canvas.create_line(x0,y0,x,y,fill = 'red') for j in range(51): a = (2 * math.pi / 16) * i + (2* math.pi / 180) * k - 1 x = math.ceil(x0 + 48 * math.cos(a)) y = math.ceil(y0 + 48 * math.sin(a) * B) canvas.create_line(x0,y0,x,y,fill = 'red') mainloop()实例060：字符串长度
题目：计算字符串长度。
s='zhangguang101'print(len(s))例061：杨辉三角
题目：打印出杨辉三角形前十行。
def generate(numRows): r = [[1]] for i in range(1,numRows): r.append(list(map(lambda x,y:x+y, [0]+r[-1],r[-1]+[0]))) return r[:numRows]a=generate(10)for i in a: print(i)实例062：查找字符串
题目：查找字符串。
s1='aabbxuebixuebi's2='ab's3='xue'print(s1.find(s2))print(s1.find(s3))实例063：画椭圆
题目：画椭圆。
程序分析：使用 tkinter。
if __name__ == '__main__': from tkinter import * x = 360 y = 160 top = y - 30 bottom = y - 30 canvas = Canvas(width = 400,height = 600,bg = 'white') for i in range(20): canvas.create_oval(250 - top,250 - bottom,250 + top,250 + bottom) top -= 5 bottom += 5 canvas.pack() mainloop()实例64：画椭圆、矩形
题目：利用ellipse 和 rectangle 画图。。
if __name__ == '__main__': from tkinter import * canvas = Canvas(width = 400,height = 600,bg = 'white') left = 20 right = 50 top = 50 num = 15 for i in range(num): canvas.create_oval(250 - right,250 - left,250 + right,250 + left) canvas.create_oval(250 - 20,250 - top,250 + 20,250 + top) canvas.create_rectangle(20 - 2 * i,20 - 2 * i,10 * (i + 2),10 * ( i + 2)) right += 5 left += 5 top += 10 canvas.pack() mainloop()实例065：画组合图形
题目：一个最优美的图案。
import mathfrom tkinter import *class PTS: def __init__(self): self.x = 0 self.y = 0points = []def LineToDemo(): screenx = 400 screeny = 400 canvas = Canvas(width = screenx,height = screeny,bg = 'white') AspectRatio = 0.85 MAXPTS = 15 h = screeny w = screenx xcenter = w / 2 ycenter = h / 2 radius = (h - 30) / (AspectRatio * 2) - 20 step = 360 / MAXPTS angle = 0.0 for i in range(MAXPTS): rads = angle * math.pi / 180.0 p = PTS() p.x = xcenter + int(math.cos(rads) * radius) p.y = ycenter - int(math.sin(rads) * radius * AspectRatio) angle += step points.append(p) canvas.create_oval(xcenter - radius,ycenter - radius, xcenter + radius,ycenter + radius) for i in range(MAXPTS): for j in range(i,MAXPTS): canvas.create_line(points[i].x,points[i].y,points[j].x,points[j].y) canvas.pack() mainloop()if __name__ == '__main__': LineToDemo()实例066：三数排序
题目：输入3个数a,b,c，按大小顺序输出。
程序分析：同实例005。
raw=[]for i in range(3): x=int(input('int%d: '%(i))) raw.append(x)for i in range(len(raw)): for j in range(i,len(raw)): if raw[i]>raw[j]: raw[i],raw[j]=raw[j],raw[i]print(raw)raw2=[]for i in range(3): x=int(input('int%d: '%(i))) raw2.append(x)print(sorted(raw2))实例067：交换位置
题目：输入数组，最大的与第一个元素交换，最小的与最后一个元素交换，输出数组。
li=[3,2,5,7,8,1,5]li[-1],li[li.index(min(li))]=li[li.index(min(li))],li[-1]m=li[0]ind=li.index(max(li))li[0]=li[ind]li[ind]=mprint(li)实例068：旋转数列
题目：有n个整数，使其前面各数顺序向后移m个位置，最后m个数变成最前面的m个数
from collections import *li=[1,2,3,4,5,6,7,8,9]deq=deque(li,maxlen=len(li))print(li)deq.rotate(int(input('rotate:')))print(list(deq))实例069：报数
题目：有n个人围成一圈，顺序排号。从第一个人开始报数（从1到3报数），凡报到3的人退出圈子，问最后留下的是原来第几号的那位。
if __name__ == '__main__': nmax = 50 n = int(input('请输入总人数:')) num = [] for i in range(n): num.append(i + 1) i = 0 k = 0 m = 0 while m < n - 1: if num[i] != 0 : k += 1 if k == 3: num[i] = 0 k = 0 m += 1 i += 1 if i == n : i = 0 i = 0 while num[i] == 0: i += 1 print(num[i])实例070：字符串长度II
题目：写一个函数，求一个字符串的长度，在main函数中输入字符串，并输出其长度。
def lenofstr(s): return len(s)print(lenofstr('tanxiaofengsheng'))实例071：输入和输出
题目：编写input()和output()函数输入，输出5个学生的数据记录。
N = 3#stu# num : string# name : string# score[4]: liststudent = []for i in range(5): student.append(['','',[]])def input_stu(stu): for i in range(N): stu[i][0] = input('input student num:\n') stu[i][1] = input('input student name:\n') for j in range(3): stu[i][2].append(int(input('score:\n')))def output_stu(stu): for i in range(N): print ('%-6s%-10s' % ( stu[i][0],stu[i][1] )) for j in range(3): print ('%-8d' % stu[i][2][j])if __name__ == '__main__': input_stu(student) print (student) output_stu(student)实例072：创建链表
题目：创建一个链表。
class Node: def __init__(self, data): self.data = data self.next = None def get_data(self): return self.dataclass List: def __init__(self, head): self.head = head def is_empty(self): return self.get_len() == 0 def get_len(self): length = 0 temp = self.head while temp is not None: length += 1 temp = temp.next return length def append(self, node): temp = self.head while temp.next is not None: temp = temp.next temp.next = node def delete(self, index): if index < 1 or index > self.get_len(): print("给定位置不合理") return if index == 1: self.head = self.head.next return temp = self.head cur_pos = 0 while temp is not None: cur_pos += 1 if cur_pos == index-1: temp.next = temp.next.next temp = temp.next def insert(self, pos, node): if pos < 1 or pos > self.get_len(): print("插入结点位置不合理") return temp = self.head cur_pos = 0 while temp is not Node: cur_pos += 1 if cur_pos == pos-1: node.next = temp.next temp.next =node break temp = temp.next def reverse(self, head): if head is None and head.next is None: return head pre = head cur = head.next while cur is not None: temp = cur.next cur.next = pre pre = cur cur = temp head.next = None return pre def print_list(self, head): init_data = [] while head is not None: init_data.append(head.get_data()) head = head.next return init_dataif __name__=='__main__': head=Node('head') link=List(head) for i in range(10): node=Node(i) link.append(node) print(link.print_list(head))实例073：反向输出链表
题目：反向输出一个链表。
class Node: def __init__(self, data): self.data = data self.next = None def get_data(self): return self.dataclass List: def __init__(self, head): self.head = head def is_empty(self): return self.get_len() == 0 def get_len(self): length = 0 temp = self.head while temp is not None: length += 1 temp = temp.next return length def append(self, node): temp = self.head while temp.next is not None: temp = temp.next temp.next = node def delete(self, index): if index < 1 or index > self.get_len(): print("给定位置不合理") return if index == 1: self.head = self.head.next return temp = self.head cur_pos = 0 while temp is not None: cur_pos += 1 if cur_pos == index-1: temp.next = temp.next.next temp = temp.next def insert(self, pos, node): if pos < 1 or pos > self.get_len(): print("插入结点位置不合理") return temp = self.head cur_pos = 0 while temp is not Node: cur_pos += 1 if cur_pos == pos-1: node.next = temp.next temp.next =node break temp = temp.next def reverse(self, head): if head is None and head.next is None: return head pre = head cur = head.next while cur is not None: temp = cur.next cur.next = pre pre = cur cur = temp head.next = None return pre def print_list(self, head): init_data = [] while head is not None: init_data.append(head.get_data()) head = head.next return init_dataif __name__=='__main__': head=Node('head') link=List(head) for i in range(10): node=Node(i) link.append(node) print(link.print_list(head)) print(link.print_list(link.reverse(head)))实例074：列表排序、连接
题目：列表排序及连接。
程序分析：排序可使用sort() 方法，连接可以使用 + 号或 extend() 方法。
a=[2,6,8]b=[7,0,4]a.extend(b)a.sort()print(a)例075：不知所云
题目：放松一下，算一道简单的题目。
if __name__ == '__main__': for i in range(5): n = 0 if i != 1: n += 1 if i == 3: n += 1 if i == 4: n += 1 if i != 4: n += 1 if n == 3: print (64 + i)关于“Python有哪些练习题”这篇文章的内容就介绍到这里，感谢各位的阅读！相信大家对“Python有哪些练习题”知识都有一定的了解，大家如果还想学习更多知识，欢迎关注编程网行业资讯频道。
