求教大神！python中引号老是SyntaxError: invalid syntax

2019-02-28 01:35:05 2k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Python报错SyntaxError: invalid syntax的常见原因与修复 SyntaxError: invalid syntax 是Python编程中常见的错误，通常由代码违反语法规则导致。常见原因包括拼写错误、缺少符号（如括号、冒号）、缩进错误、使用不支持的语法、关键字冲突以及非法字符。修复方法包括仔细检查拼写、确保符号配对、保持缩进一致、检查Python版本兼容性、避免使用保留关键字以及删除非法字符。使用IDE的语法高亮功能、编写单元测试和查阅官方文档可以有效减少此类错误的发生。通过养成良好的编程习惯，开发者可以更高效地定位和修复语法错误。阅读详情

做一个仿真的时候引号老是语法错误，但又不知道是哪里错了，第33行print "%d/%d t = %g" % (i, len(t), it)，请教各位大神帮我看看

代码我截了一段，这里放不下了（源代码：https://github.com/aluque/strees/blob/master/grow_tree.py）

def main():

    """ This is the main function of the code it is the starting point of

    a simulation. """



    # Load input parameters from the input file and add the, in allcaps

    # to the global namespace.

    global EXTERNAL_FIELD_VECTOR, ELECTRODE

    parameters = load_input(sys.argv[1], param_descriptors)

    globals().update(dict((key.upper(), item)

                          for key, item in parameters.iteritems()))

    if RANDOM_SEED >= 0:

        seed(RANDOM_SEED)

    

    EXTERNAL_FIELD_VECTOR = array([0.0, 0.0, EXTERNAL_FIELD])

    ELECTRODE = init_electrode()

    

    # init a tree from scratch

    tr, r0, q0 = init_from_scratch(INITIAL_NODES)

    

    dt = TIME_STEP

    t = r_[0:END_TIME:dt]

    

    r, q = r0, q0



    dfile = DataFile(OUT_FILE, parameters=parameters)

    branched = False

    

    for i, it in enumerate(t):

        # with ContextTimer("plotting"):

        #     plot_projections(r, q)

        #     pylab.savefig('tree_%.3d.png' % i)

        # print 't = %g\ttree_%.3d.png' % (it, i)

        print "%d/%d t = %g" % (i, len(t), it)

        branch_prob = BRANCHING_PROBABILITY



        if SINGLE_BRANCHING_TIME > 0:

            if it > SINGLE_BRANCHING_TIME:

                if not branched:

                    branch_prob = inf

                    branched = True



        if SINGLE_BRANCHING_Z != 0 and not branched:

            zterm = r[tr.terminals()[0], Z]

            if zterm < SINGLE_BRANCHING_Z:

                if not branched:

                    branch_prob = inf

                    branched = True



        r, q = adapt_step(tr, r, q, dt, p=branch_prob)



        with ContextTimer("saving %d" % i):

            phi = solve_phi(r, q)

            dfile.add_step(it, tr, r, q, phi,

                           error=error, error_dq=error_dq)

            

        if END_WITH_RECONNECTION and tr.reconnects(r):

            print "Finishing due to a reconnection."

            break