Question

我有一个包含大量数字的文件，但有些标题让我无法做太多事情。该文件如下所示：

x: 
1 2 3 4 

f: 
5 6 7 8

h:
9 10 11 12 13

所以我有这个程序，我相信会帮助我访问这些数字，但我收到一条关于它的错误消息。

filename = input('file: ')
f = open(filename, 'r')
output=[]
w, h = map(int,lines.split())
x=[]
for i, line in enumerate(f):
    if i == h:
        break
    x.append(map(int,line.split()[:w]))
output.append(x)

所以我尝试剥离标题，但是我收到一条关于它是字符串等的错误消息。

filename = input('file: ')
f = open(filename, 'r')
output=[]
func = f.readline()
lines = func.strip('x').strip('f').strip('h').split()
w, h = map(int,lines.split())
x=[]
for i, line in enumerate(f):
    if i == h:
         break
    x.append(map(int,line.split()[:w]))
output.append(x)

任何建议？

Answer 1

实施例

filename = input('filename: ')

with open(filename, 'r') as f:
    for line in f: # line one-by-one
        line = line.strip() # strip to check empty lines
        if line: # skip empty lines
            elements = line.split()
            print(elements[2]) # [column]

或

filename = input('filename: ')

# get not empty lines
lines = []

with open(filename, 'r') as f:
    for line in f: # 
        line = line.strip() # strip to check empty lines
        if line: # skip empty lines
            elements = line.split()
            lines.append(elements)

# work with lines one-by-one

for line in lines: # 
    print(line[2]) # [column]

# direct access to any element 

print(lines[1][2]) # [row][column]

如果在python中有标题，我如何从文件中获取数字并将其作为整数读取？

1 个答案: