python文件到字典

Question

我有一个稍微不同的问题比以前提出的问题有关此主题。文本文件有以下内容

x1 x2 x3 gh3 tf2 
0.1 0.7 0.8 0.9 8.9 
y1 ft gt hh 
2 4 7 8 
. 
. 
. 

我想添加到字典，所以有键：值x1：0.1等等。

这是我现在有，它并没有真正为我工作

ned = {} 
nel =[] 
with open('test.dat', 'r') as f: 
    for line in f: 
     splitline= line.split() 
     print(splitline) 
     ned[int(splitline[0])] = ",".join(splitline[1:]) 

Answer 1

随着str.split()和zip功能：

with open('test.dat', 'r') as f: 
    d = {} 
    for i,l in enumerate(f.read().splitlines()): 
     if not i % 2: 
      keys = l.split() 
     else: 
      d.update(zip(keys, l.split())) 

print(d) 

输出：

{'x1': '0.1', 'y1': '2', 'tf2': '8.9', 'ft': '4', 'x3': '0.8', 'gh3': '0.9', 'hh': '8', 'x2': '0.7', 'gt': '7'} 

Answer 2

temp_dict = dict() 
with open("test.dat", 'r') as f: 
    lines = f.readlines() 
    for i in range(0, len(lines), 2): 
     keys = lines[i].split() 
     vals = lines[i + 1].split() 
     temp_dict.update(key: val for key, val in zip(keys, vals)) 

Answer 3

你可以试试这个：

data = [i.strip('\n').split() for i in open('filename.txt')] 
new_data = [{b[i]:b[i+1] for i in range(0, len(b), 2)} for b in zip(*data)] 
final_dict = {} 
for i in new_data: 
    final_dict.update(i) 

输出：

{'x1': '0.1', 'ft': '4', 'gt': '7', 'gh3': '0.9', 'y1': '2', 'hh': '8', 'x2': '0.7', 'x3': '0.8',...} 

Answer 4

lines_read = [] 
with open("test.dat", "r") as f: 
    lines_read = f.readlines() 

key_line = [] 
value_line = [] 
out_dict = {} 
for i, line in enumerate(lines_read): 
    if i % 2 == 0: 
     key_line = line.strip().split() 
    else: 
     value_line = line.strip().split() 
     out_dict.update(dict(zip(key_line, value_line))) 

为了简洁，而且如果你不那么在乎写明确的代码，你可以没有列表的初始化：

with open("test.dat", "r") as f: 
    lines_read = f.readlines() 

out_dict = {} 
for i, line in enumerate(lines_read): 
    if i % 2 == 0: 
     key_line = line.strip().split() 
    else: 
     value_line = line.strip().split() 
     out_dict.update(dict(zip(key_line, value_line))) 

Answer 5

以下内容每次读取两行文件，并使用字典理解创建每2行字典更新my_dict有：

my_dict = {} 

with open('test.dat') as f_input: 
    for l1, l2 in zip(*[iter(f_input)] * 2): 
     my_dict.update({k: v for k, v in zip(l1.split(), l2.split())}) 

print(my_dict) 

给你：

{'gt': '7', 'ft': '4', 'gh3': '0.9', 'y1': '2', 'hh': '8', 'x2': '0.7', 'x3': '0.8', 'x1': '0.1', 'tf2': '8.9'} 

要将所有值转换为浮动，改变更新：

my_dict.update({k: float(v) for k, v in zip(l1.split(), l2.split())}) 

给你：

{'gh3': 0.9, 'tf2': 8.9, 'x3': 0.8, 'gt': 7.0, 'y1': 2.0, 'x1': 0.1, 'ft': 4.0, 'hh': 8.0, 'x2': 0.7}