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Python里导入txt里的数据做计算

so easy import rewith open('lists.txt') as f: s = f.read()alltogether = sum(int(i) for i in re.findall(r'\d+', s))

data = []for l in open("a.txt"): row = [int(x) for x in l.split()] if len(row) > 0: data.append(row)

from __future__ import print_function print(filtered_sentence,file="文件名")

导入excel(xlsx): # ! /code/pythonwork/python3from openpyxl import load_workbook##读取路径wb = load_workbook(filename=r'C:\Users\Administrator\Desktop\打开excel的位置.xlsx')##读取名字为Sheet1的sheet表ws = wb.get_sheet_by_name...

import rewith open('num.txt','r') as f : a=f.read()b=re.findall(r'130000000',a)print(len(b))没看懂你要表达啥,不知道这个是不是你想要的。

# 8行结束有一个空白行with open('data.txt') as data: line = 1 sql = 'insert into fz_esx values(%s,%s,%s,%s,%s,%s,%s,%s)' values = [] for d in data: if d != '': values.append('"%s"' % str(d)) if line % 9 == 0: # 执行sql插入代码 #...

import sysf=open(r"G:\\PythonPractise\record.txt","r")while True: line=f.readline() print(line,end=" ") if not line: breakf.close()

def itemfactory(filename, parserfunc): """用给定的加工方法对文件中的每一行进行处理""" with open(filename, 'rt') as handle: for ln in handle: yield parserfunc(ln)for a, b in itemfactory( "data.txt", # 加工方法是将行字符串拆分后...

filename = r'a.txt'alist = []lines = open(filename,'r').readlines()alist = [line.strip().split(',')[3] for line in lines ]#字段以逗号分隔,这里取得是第4列

很多时候,我们将数据存在txt或者csv格式的文件里,最后再用python读取出来,存到数组或者列表里,再做相应计算。本文首先介绍写入txt的方法,再根据不同的需求(存为数组还是list),介绍从txt读取浮点数的方法。 一、写入浮点数到txt文件: 假...

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