filename="example.txt"df=pd.read_csv(filename,header=None,names=['line'])df['line_number']=df.index+1print(df) 1. 2. 3. 4. 5. 6. 7. 在上面的代码中,我们使用pandas的read_csv函数读取文本文件,并将其存储在一个DataFrame对象中。然后,我们使用index属
print('x2:', x, '小于250...') else: print('y1:', y) # 打印1—10的数 number = 1 while number < 11: print(number) number += 1 #当number == 7时则退出循环 if number == 7: break print('=' * 100, 'for循环') for line in range(10): print(line) 7.格式化输出:- 三种方...
print(int(number) + 10) # int可将字符串10转换成数字10 print(number + str(10)) # str将10转换为字符串后实现字符串拼接 05-输入输出基础练习 username = input('username: ') print('welcome', username) # print各项间默认以空格作为分隔符 print('welcome ' + username) # 注意引号内最后的空格 ...
print(int(number)/2) 只要输入的不是数字,它就马上崩溃了: 输入一个数字:9527 4763.5 输入一个数字:hello Traceback (most recent call last): File "/Users/maishu/git/wx_maishucode/code/092.py", line 4, in <module> print(int(number)/2) ValueError: invalid literal for int() with base 10...
importtracebackdefget_line_number():traceback_info=traceback.format_stack()# 获取堆栈信息的最后一行,即当前代码所在行current_line=traceback_info[-2]# 提取行号line_number=current_line.split(",")[1].strip().split(" ")[1]returnint(line_number)# 调用示例print(get_line_number()) ...
"""This provides a lineno() function to make it easy to grab the line number that we're on."""importinspectdeflineno():"""Returns the current line number in our program."""returninspect.currentframe().f_back.f_linenoif__name__=='__main__':print"hello, this is line number", lin...
print(a.isnumeric()) b = "\u00B2" #unicode for ² print(b.isnumeric()) c = "10km2" print(c.isnumeric())以上实例输出结果如下:True True True True FalsePython3 字符串Python3 数字(Number) Python3 列表 2 篇笔记 写笔记 renmu 110***2351@qq.com 参考地址 13 str.isdecimal () 与...
print(round(1.4))print(round(1.5))print(round(1.6))print(round(2.4))print(round(2.5))print(round(2.6)) 得出结论 当个位为奇数,小数部分>=0.5入,其余为舍 当个位为偶数,小数部分>0.5入,其余为舍。 ==和is的区别 == 比较的是两个对象的内容是否相等,默认会调用对象的__eq__() 方法。
args=parser.parse_args()domain=args.domain ofile=args.ofile lines=args.linesprint("domain:",domain)print("output file:",ofile)print("lines:",lines) 原文:https://medium.com/@ahadsheriff/the-best-way-to-make-command-line-interfaces-in-python-e00e8b9d10c9...
/usr/bin/python# -*- coding: UTF-8 -*-counter=100# 赋值整型变量miles=1000.0# 浮点型name="John"# 字符串printcounterprintmilesprintname 运行实例 » 以上实例中,100,1000.0和"John"分别赋值给counter,miles,name变量。 执行以上程序会输出如下结果:...