我想使用下面的python代码显示图形，但是出现图像上的语法错误。请帮助纠正此错误。我正在使用Python 3
import os
import sys
import fnss
import networkx as nx
import fnss
import cvxopt
import numpy as np
import codecs
import random
import matplotlib.pyplot as plt
topo_str = 'topo_peter.xml'
topology = fnss.read_topology(topo_str)
topology_directed = topology.to_directed(topology)
print nx.info(topology_directed)
nx.draw(topology_directed)
plt.show()
这就是我要得到的
File "<ipython-input-1-fa7157dd7268>", line 14 print nx.info(topology_directed) ^ SyntaxError: invalid syntax
答案 0 :(得分：0)
基于提供的信息：
14:42:30 Cloning into bare repository 'testing-repo.git'...
14:44:25 From bitbucket.org:TEST/testing-repo
14:44:25 * branch HEAD -> FETCH_HEAD
14:44:29 remote:
14:44:29 ! [remote rejected] test/test/testBranch ->test/test/testBranch (pre-receive hook declined)
14:44:29 error: failed to push some refs to 'ssh://git@git.testing-repo/test/test-test.git'
14:44:29 hint: Updates were rejected because the remote contains work that you do
14:44:29 hint: not have locally. This is usually caused by another repository pushing
14:44:29 hint: to the same ref. You may want to first integrate the remote changes
14:44:29 hint: (e.g., 'git pull ...') before pushing again.
14:44:29 hint: See the 'Note about fast-forwards' in 'git push --help' for details.
14:44:29 Everything up-to-date
14:44:29 Finished: SUCCESS
对于使用Python 3执行Python 2语句的人来说，这显然是一个简单的 lineChartOptions = {
responsive: true,
maintainAspectRatio: false,
scales: {
xAxes: [{
type: 'time',
time: {
parser: 'YYYY-MM-DD HH:mm:ss',
unit: 'day',
autoSkip: true,
displayFormats: {
day: 'MMM-DD'
}
},
ticks: {
source: 'data',
},
scaleLabel: {
display: true,
labelString: 'Date'
}
}],
yAxes: [{
ticks: {
beginAtZero:true,
},
scaleLabel: {
display: true,
labelString: 'Values'
}
}]
}
}
<canvas class ="can" baseChart [chartType]="lineChartType" [datasets]="lineChartData" [labels]="lineChartLabels"
[options]="lineChartOptions" [colors]="lineChartColors" [legend]="true" (chartClick)="chartClicked($event)">
</canvas>
。
Python version: 3
Error message: invalid syntax on line 14 -> print nx.info(topology_directed)
对于Python 3，使用
syntax error因此将print "something" # is valid for Python 2, but not Python 3
更改为print("something", "and more", "even more")
可解决问题。